pidgin/pidgin

certificate: Use SHA256 fingerprints instead of SHA1
release-2.x.y
2017-03-06, dx
b3d0ba7c75f6
certificate: Use SHA256 fingerprints instead of SHA1

This meant adding a get_fingerprint_sha256 function to the certificate scheme
structs, which meant adding a struct_size member because we ran out of reserved
members there.

The API-facing purple_certificate_get_fingerprint_sha256() has a fallback
parameter to use sha1 if the SSL plugin doesn't implement this function
(probably an outdated installation, or a third party SSL plugin). When using
the function for display purposes, the fallback is disabled and it returns
NULL, but when using it to compare certificates it's better to have at least
the SHA1.

In functions like purple_certificate_display_x509(), some slight changes to
translatable strings would have been required. Since we're in a string freeze
right now, I avoided those by concatenating a language-neutral "SHA256: %s" at
the end of those messages. The SHA1 line used the word "fingerprint" but we
can't reuse that translation. This should be cleaned up after the release.
/**
* @file buddyicon.h Buddy Icon API
* @ingroup core
*/
/* 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_BUDDYICON_H_
#define _PURPLE_BUDDYICON_H_
/** An opaque structure representing a buddy icon for a particular user on a
* particular #PurpleAccount. Instances are reference-counted; use
* purple_buddy_icon_ref() and purple_buddy_icon_unref() to take and release
* references.
*/
typedef struct _PurpleBuddyIcon PurpleBuddyIcon;
#include "account.h"
#include "blist.h"
#include "imgstore.h"
#include "prpl.h"
#include "util.h"
#ifdef __cplusplus
extern "C" {
#endif
/**************************************************************************/
/** @name Buddy Icon API */
/**************************************************************************/
/*@{*/
/**
* Creates a new buddy icon structure and populates it.
*
* If the buddy icon already exists, you'll get a reference to that structure,
* which will have been updated with the data supplied.
*
* @param account The account the user is on.
* @param username The username the icon belongs to.
* @param icon_data The buddy icon data.
* @param icon_len The buddy icon length.
* @param checksum A protocol checksum from the prpl or @c NULL.
*
* @return The buddy icon structure, with a reference for the caller.
*/
PurpleBuddyIcon *purple_buddy_icon_new(PurpleAccount *account, const char *username,
void *icon_data, size_t icon_len,
const char *checksum);
/**
* Increments the reference count on a buddy icon.
*
* @param icon The buddy icon.
*
* @return @a icon.
*/
PurpleBuddyIcon *purple_buddy_icon_ref(PurpleBuddyIcon *icon);
/**
* Decrements the reference count on a buddy icon.
*
* If the reference count reaches 0, the icon will be destroyed.
*
* @param icon The buddy icon.
*
* @return @a icon, or @c NULL if the reference count reached 0.
*/
PurpleBuddyIcon *purple_buddy_icon_unref(PurpleBuddyIcon *icon);
/**
* Updates every instance of this icon.
*
* @param icon The buddy icon.
*/
void purple_buddy_icon_update(PurpleBuddyIcon *icon);
/**
* Sets the buddy icon's data.
*
* @param icon The buddy icon.
* @param data The buddy icon data, which the buddy icon code
* takes ownership of and will free.
* @param len The length of the data in @a data.
* @param checksum A protocol checksum from the prpl or @c NULL.
*/
void
purple_buddy_icon_set_data(PurpleBuddyIcon *icon, guchar *data,
size_t len, const char *checksum);
/**
* Returns the buddy icon's account.
*
* @param icon The buddy icon.
*
* @return The account.
*/
PurpleAccount *purple_buddy_icon_get_account(const PurpleBuddyIcon *icon);
/**
* Returns the buddy icon's username.
*
* @param icon The buddy icon.
*
* @return The username.
*/
const char *purple_buddy_icon_get_username(const PurpleBuddyIcon *icon);
/**
* Returns the buddy icon's checksum.
*
* This function is really only for prpl use.
*
* @param icon The buddy icon.
*
* @return The checksum.
*/
const char *purple_buddy_icon_get_checksum(const PurpleBuddyIcon *icon);
/**
* Returns the buddy icon's data.
*
* @param icon The buddy icon.
* @param len If not @c NULL, the length of the icon data returned will be
* set in the location pointed to by this.
*
* @return A pointer to the icon data.
*/
gconstpointer purple_buddy_icon_get_data(const PurpleBuddyIcon *icon, size_t *len);
/**
* Returns an extension corresponding to the buddy icon's file type.
*
* @param icon The buddy icon.
*
* @return The icon's extension, "icon" if unknown, or @c NULL if
* the image data has disappeared.
*/
const char *purple_buddy_icon_get_extension(const PurpleBuddyIcon *icon);
/**
* Returns a full path to an icon.
*
* If the icon has data and the file exists in the cache, this will return
* a full path to the cache file.
*
* In general, it is not appropriate to be poking in the icon cache
* directly. If you find yourself wanting to use this function, think
* very long and hard about it, and then don't.
*
* @param icon The buddy icon
*
* @return A full path to the file, or @c NULL under various conditions.
*/
char *purple_buddy_icon_get_full_path(PurpleBuddyIcon *icon);
/*@}*/
/**************************************************************************/
/** @name Buddy Icon Subsystem API */
/**************************************************************************/
/*@{*/
/**
* Sets a buddy icon for a user.
*
* @param account The account the user is on.
* @param username The username of the user.
* @param icon_data The buddy icon data, which the buddy icon code
* takes ownership of and will free.
* @param icon_len The length of the icon data.
* @param checksum A protocol checksum from the prpl or @c NULL.
*/
void
purple_buddy_icons_set_for_user(PurpleAccount *account, const char *username,
void *icon_data, size_t icon_len,
const char *checksum);
/**
* Returns the checksum for the buddy icon of a specified buddy.
*
* This avoids loading the icon image data from the cache if it's
* not already loaded for some other reason.
*
* @param buddy The buddy
*
* @return The checksum.
*/
const char *
purple_buddy_icons_get_checksum_for_user(PurpleBuddy *buddy);
/**
* Returns the buddy icon information for a user.
*
* @param account The account the user is on.
* @param username The username of the user.
*
* @return The icon (with a reference for the caller) if found, or @c NULL if
* not found.
*/
PurpleBuddyIcon *
purple_buddy_icons_find(PurpleAccount *account, const char *username);
/**
* Returns the buddy icon image for an account.
*
* The caller owns a reference to the image in the store, and must dereference
* the image with purple_imgstore_unref() for it to be freed.
*
* This function deals with loading the icon from the cache, if
* needed, so it should be called in any case where you want the
* appropriate icon.
*
* @param account The account
*
* @return The account's buddy icon image.
*/
PurpleStoredImage *
purple_buddy_icons_find_account_icon(PurpleAccount *account);
/**
* Sets a buddy icon for an account.
*
* This function will deal with saving a record of the icon,
* caching the data, etc.
*
* @param account The account for which to set a custom icon.
* @param icon_data The image data of the icon, which the
* buddy icon code will free.
* @param icon_len The length of the data in @a icon_data.
*
* @return The icon that was set. The caller does NOT own
* a reference to this, and must call purple_imgstore_ref()
* if it wants one.
*/
PurpleStoredImage *
purple_buddy_icons_set_account_icon(PurpleAccount *account,
guchar *icon_data, size_t icon_len);
/**
* Returns the timestamp of when the icon was set.
*
* This is intended for use in protocols that require a timestamp for
* buddy icon update reasons.
*
* @param account The account
*
* @return The time the icon was set, or 0 if an error occurred.
*/
time_t
purple_buddy_icons_get_account_icon_timestamp(PurpleAccount *account);
/**
* Returns a boolean indicating if a given blist node has a custom buddy icon.
*
* @param node The blist node.
*
* @return A boolean indicating if @a node has a custom buddy icon.
* @since 2.5.0
*/
gboolean
purple_buddy_icons_node_has_custom_icon(PurpleBlistNode *node);
/**
* Returns the custom buddy icon image for a blist node.
*
* The caller owns a reference to the image in the store, and must dereference
* the image with purple_imgstore_unref() for it to be freed.
*
* This function deals with loading the icon from the cache, if
* needed, so it should be called in any case where you want the
* appropriate icon.
*
* @param node The node.
*
* @return The custom buddy icon.
* @since 2.5.0
*/
PurpleStoredImage *
purple_buddy_icons_node_find_custom_icon(PurpleBlistNode *node);
/**
* Sets a custom buddy icon for a blist node.
*
* This function will deal with saving a record of the icon, caching the data,
* etc.
*
* @param node The blist node for which to set a custom icon.
* @param icon_data The image data of the icon, which the buddy icon code will
* free. Use NULL to unset the icon.
* @param icon_len The length of the data in @a icon_data.
*
* @return The icon that was set. The caller does NOT own a reference to this,
* and must call purple_imgstore_ref() if it wants one.
* @since 2.5.0
*/
PurpleStoredImage *
purple_buddy_icons_node_set_custom_icon(PurpleBlistNode *node,
guchar *icon_data, size_t icon_len);
/**
* Sets a custom buddy icon for a blist node.
*
* Convenience wrapper around purple_buddy_icons_node_set_custom_icon.
* @see purple_buddy_icons_node_set_custom_icon()
*
* @param node The blist node for which to set a custom icon.
* @param filename The path to the icon to set for the blist node. Use NULL
* to unset the custom icon.
*
* @return The icon that was set. The caller does NOT own a reference to this,
* and must call purple_imgstore_ref() if it wants one.
* @since 2.5.0
*/
PurpleStoredImage *
purple_buddy_icons_node_set_custom_icon_from_file(PurpleBlistNode *node,
const gchar *filename);
#if !(defined PURPLE_DISABLE_DEPRECATED) || (defined _PURPLE_BUDDYICON_C_)
/**
* PurpleContact version of purple_buddy_icons_node_has_custom_icon.
*
* @copydoc purple_buddy_icons_node_has_custom_icon()
*
* @deprecated Use purple_buddy_icons_node_has_custom_icon instead.
*/
gboolean
purple_buddy_icons_has_custom_icon(PurpleContact *contact);
/**
* PurpleContact version of purple_buddy_icons_node_find_custom_icon.
*
* @copydoc purple_buddy_icons_node_find_custom_icon()
*
* @deprecated Use purple_buddy_icons_node_find_custom_icon instead.
*/
PurpleStoredImage *
purple_buddy_icons_find_custom_icon(PurpleContact *contact);
/**
* PurpleContact version of purple_buddy_icons_node_set_custom_icon.
*
* @copydoc purple_buddy_icons_node_set_custom_icon()
*
* @deprecated Use purple_buddy_icons_node_set_custom_icon instead.
*/
PurpleStoredImage *
purple_buddy_icons_set_custom_icon(PurpleContact *contact,
guchar *icon_data, size_t icon_len);
#endif
/**
* Sets whether or not buddy icon caching is enabled.
*
* @param caching TRUE of buddy icon caching should be enabled, or
* FALSE otherwise.
*/
void purple_buddy_icons_set_caching(gboolean caching);
/**
* Returns whether or not buddy icon caching should be enabled.
*
* The default is TRUE, unless otherwise specified by
* purple_buddy_icons_set_caching().
*
* @return TRUE if buddy icon caching is enabled, or FALSE otherwise.
*/
gboolean purple_buddy_icons_is_caching(void);
/**
* Sets the directory used to store buddy icon cache files.
*
* @param cache_dir The directory to store buddy icon cache files to.
*/
void purple_buddy_icons_set_cache_dir(const char *cache_dir);
/**
* Returns the directory used to store buddy icon cache files.
*
* The default directory is PURPLEDIR/icons, unless otherwise specified
* by purple_buddy_icons_set_cache_dir().
*
* @return The directory to store buddy icon cache files to.
*/
const char *purple_buddy_icons_get_cache_dir(void);
/**
* Returns the buddy icon subsystem handle.
*
* @return The subsystem handle.
*/
void *purple_buddy_icons_get_handle(void);
/**
* Initializes the buddy icon subsystem.
*/
void purple_buddy_icons_init(void);
/**
* Uninitializes the buddy icon subsystem.
*/
void purple_buddy_icons_uninit(void);
/*@}*/
/**************************************************************************/
/** @name Buddy Icon Helper API */
/**************************************************************************/
/*@{*/
/**
* Gets display size for a buddy icon
*/
void purple_buddy_icon_get_scale_size(PurpleBuddyIconSpec *spec, int *width, int *height);
/*@}*/
#ifdef __cplusplus
}
#endif
#endif /* _PURPLE_BUDDYICON_H_ */