HGKeeper

/* 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

#include "internal.h"

#include "buddyicon.h"

#include "conversation.h"

#include "debug.h"

#include "image.h"

#include "util.h"

/* NOTE: Instances of this struct are allocated without zeroing the memory, so

* NOTE: be sure to update purple_buddy_icon_new() if you add members. */

struct _PurpleBuddyIcon

{

PurpleAccount *account; /* The account the user is on. */

PurpleImage *img; /* The image containing

the icon data. */

char *username; /* The username the icon belongs to. */

char *checksum; /* The protocol checksum. */

unsigned int ref_count; /* The buddy icon reference count. */

};

* This is the big grand daddy hash table that contains references to

* everybody's buddy icons.

* Key is a PurpleAccount.

* Value is another hash table, usually referred to as "icon_cache."

* For this inner hash table:

* Key is the username of the buddy whose icon is being stored.

* Value is the PurpleBuddyIcon for this buddy.

static GHashTable *account_cache = NULL;

* This hash table contains a bunch of PurpleImages that are

* shared across all accounts.

* Key is the filename for this image as constructed by

* purple_image_generate_filename(). So it is the base16 encoded

* sha-1 hash plus an appropriate file extension. For example:

* "0f4972d17d1e70e751c43c90c948e72efbff9796.gif"

* The value is a PurpleImage containing the icon data. These images are

* reference counted, and when the count reaches 0 we remove the image from

* the hash table (but it might still be saved on disk, if the icon is being

* used by offline accounts or some such).

static GHashTable *icon_data_cache = NULL;

* This hash table contains reference counts for how many times each

* icon in the ~/.purple/icons/ directory is being used. It's pretty

* crazy. It maintains the reference count across sessions, too, so

* if you exit Pidgin then this hash table is reconstructed the next

* time Pidgin starts.

* Key is the filename for this image as constructed by

* purple_image_generate_filename(). So it is the base16 encoded

* sha-1 hash plus an appropriate file extension. For example:

* "0f4972d17d1e70e751c43c90c948e72efbff9796.gif"

* The value is a GINT_TO_POINTER count of the number of times this

* icon is used. So if four of your buddies are using an icon, and

* you have the icon set for two of your accounts, then this number

* will be six. When this reference count reaches 0 the icon will

* be deleted from disk.

static GHashTable *icon_file_cache = NULL;

* This hash table is used for both custom buddy icons on PurpleBlistNodes and

* account icons.

static GHashTable *pointer_icon_cache = NULL;

static char *cache_dir = NULL;

/* "Should icons be cached to disk?" */

static gboolean icon_caching = TRUE;

static void delete_buddy_icon_settings(PurpleBlistNode *node, const char *setting_name);

* Begin functions for dealing with the on-disk icon cache

static void

ref_filename(const char *filename)

{

int refs;

g_return_if_fail(filename != NULL);

refs = GPOINTER_TO_INT(g_hash_table_lookup(icon_file_cache, filename));

g_hash_table_insert(icon_file_cache, g_strdup(filename),

GINT_TO_POINTER(refs + 1));

}

static void

unref_filename(const char *filename)

{

int refs;

if (filename == NULL)

return;

refs = GPOINTER_TO_INT(g_hash_table_lookup(icon_file_cache, filename));

if (refs == 1)

{

g_hash_table_remove(icon_file_cache, filename);

}

else

{

g_hash_table_insert(icon_file_cache, g_strdup(filename),

GINT_TO_POINTER(refs - 1));

}

static const gchar *

image_get_filename(PurpleImage *img)

{

return g_object_get_data(G_OBJECT(img), "purple-buddyicon-filename");

}

static void

purple_buddy_icon_data_cache(PurpleImage *img)

{

const gchar *dirname, *filename;

gchar *path;

g_return_if_fail(PURPLE_IS_IMAGE(img));

if (!purple_buddy_icons_is_caching())

return;

dirname = purple_buddy_icons_get_cache_dir();

filename = image_get_filename(img);

g_return_if_fail(filename != NULL);

if (!g_file_test(dirname, G_FILE_TEST_IS_DIR))

{

purple_debug_info("buddyicon", "creating icon cache directory");

if (g_mkdir(dirname, S_IRUSR | S_IWUSR | S_IXUSR) < 0)

{

purple_debug_error("buddyicon",

"unable to create directory %s: %s",

dirname, g_strerror(errno));

return;

}

path = g_build_filename(dirname, filename, NULL);

if (!purple_image_save(img, path))

purple_debug_error("buddyicon", "failed to save icon %s", path);

g_free(path);

}

static void

purple_buddy_icon_data_uncache_file(const char *filename)

{

const char *dirname;

char *path;

g_return_if_fail(filename != NULL);

/* It's possible that there are other references to this icon

* cache file that are not currently loaded into memory. */

if (GPOINTER_TO_INT(g_hash_table_lookup(icon_file_cache, filename)))

return;

dirname = purple_buddy_icons_get_cache_dir();

path = g_build_filename(dirname, filename, NULL);

if (g_file_test(path, G_FILE_TEST_EXISTS))

{

if (g_unlink(path))

{

purple_debug_error("buddyicon", "Failed to delete %s: %s\n",

path, g_strerror(errno));

}

else

{

purple_debug_info("buddyicon", "Deleted cache file: %s\n", path);

}

g_free(path);

}

* End functions for dealing with the on-disk icon cache

* Begin functions for dealing with the in-memory icon cache

static gboolean

value_equals(gpointer key, gpointer value, gpointer user_data)

{

return (value == user_data);

}

static void

image_deleting_cb(gpointer _filename)

{

PurpleImage *img;

gchar *filename = _filename;

img = g_hash_table_lookup(icon_data_cache, filename);

purple_buddy_icon_data_uncache_file(filename);

g_hash_table_remove(icon_data_cache, filename);

/* We could make this O(1) by using another hash table, but

* this is probably good enough. */

g_hash_table_foreach_remove(pointer_icon_cache, value_equals, (gpointer)img);

g_free(filename);

}

static PurpleImage *

purple_buddy_icon_data_new(guchar *icon_data, size_t icon_len)

{

PurpleImage *newimg, *oldimg;

const gchar *filename;

g_return_val_if_fail(icon_data != NULL, NULL);

g_return_val_if_fail(icon_len > 0, NULL);

newimg = purple_image_new_from_data(icon_data, icon_len);

filename = purple_image_generate_filename(newimg);

/* TODO: Why is this function called for buddies without icons? If this is

* intended, should the filename be null?

if (filename != NULL) {

oldimg = g_hash_table_lookup(icon_data_cache, filename);

if (oldimg) {

g_warn_if_fail(PURPLE_IS_IMAGE(oldimg));

g_object_unref(newimg);

g_object_ref(oldimg);

return oldimg;

}

/* This will take ownership of file and free it as needed */

g_hash_table_insert(icon_data_cache, g_strdup(filename), newimg);

}

g_object_set_data_full(G_OBJECT(newimg), "purple-buddyicon-filename",

g_strdup(filename), image_deleting_cb);

purple_buddy_icon_data_cache(newimg);

return newimg;

}

* End functions for dealing with the in-memory icon cache

static PurpleBuddyIcon *

purple_buddy_icon_create(PurpleAccount *account, const char *username)

{

PurpleBuddyIcon *icon;

GHashTable *icon_cache;

/* This does not zero. See purple_buddy_icon_new() for

* information on which function allocates which member. */

icon = g_slice_new(PurpleBuddyIcon);

icon->account = account;

icon->username = g_strdup(username);

icon->checksum = NULL;

icon->ref_count = 1;

icon_cache = g_hash_table_lookup(account_cache, account);

if (icon_cache == NULL)

{

icon_cache = g_hash_table_new(g_str_hash, g_str_equal);

g_hash_table_insert(account_cache, account, icon_cache);

}

g_hash_table_insert(icon_cache,

(char *)purple_buddy_icon_get_username(icon), icon);

return icon;

}

PurpleBuddyIcon *

purple_buddy_icon_new(PurpleAccount *account, const char *username,

void *icon_data, size_t icon_len,

const char *checksum)

{

PurpleBuddyIcon *icon;

g_return_val_if_fail(account != NULL, NULL);

g_return_val_if_fail(username != NULL, NULL);

g_return_val_if_fail(icon_data != NULL, NULL);

g_return_val_if_fail(icon_len > 0, NULL);

/* purple_buddy_icons_find() does allocation, so be

* sure to update it as well when members are added. */

icon = purple_buddy_icons_find(account, username);

/* purple_buddy_icon_create() sets account & username */

if (icon == NULL)

icon = purple_buddy_icon_create(account, username);

/* purple_buddy_icon_set_data() sets img, but it

* references img first, so we need to initialize it */

icon->img = NULL;

purple_buddy_icon_set_data(icon, icon_data, icon_len, checksum);

return icon;

}

PurpleBuddyIcon *

purple_buddy_icon_ref(PurpleBuddyIcon *icon)

{

g_return_val_if_fail(icon != NULL, NULL);

icon->ref_count++;

return icon;

}

void

purple_buddy_icon_unref(PurpleBuddyIcon *icon)

{

if (icon == NULL)

return;

g_return_if_fail(icon->ref_count > 0);

icon->ref_count--;

if (icon->ref_count == 0)

{

GHashTable *icon_cache = g_hash_table_lookup(account_cache, purple_buddy_icon_get_account(icon));

if (icon_cache != NULL)

g_hash_table_remove(icon_cache, purple_buddy_icon_get_username(icon));

g_free(icon->username);

g_free(icon->checksum);

g_object_unref(icon->img);

g_slice_free(PurpleBuddyIcon, icon);

}

void

purple_buddy_icon_update(PurpleBuddyIcon *icon)

{

PurpleIMConversation *im;

PurpleAccount *account;

const char *username;

PurpleBuddyIcon *icon_to_set;

GSList *buddies;

g_return_if_fail(icon != NULL);

account = purple_buddy_icon_get_account(icon);

username = purple_buddy_icon_get_username(icon);

/* If no data exists (icon->img == NULL), then call the functions below

* with NULL to unset the icon. They will then unref the icon and it should

* be destroyed. The only way it wouldn't be destroyed is if someone

* else is holding a reference to it, in which case they can kill

* the icon when they realize it has no data. */

icon_to_set = icon->img ? icon : NULL;

/* Ensure that icon remains valid throughout */

purple_buddy_icon_ref(icon);

buddies = purple_blist_find_buddies(account, username);

while (buddies != NULL)

{

PurpleBuddy *buddy = (PurpleBuddy *)buddies->data;

char *old_icon;

purple_buddy_set_icon(buddy, icon_to_set);

old_icon = g_strdup(purple_blist_node_get_string((PurpleBlistNode *)buddy,

"buddy_icon"));

if (icon->img && purple_buddy_icons_is_caching())

{

const char *filename = image_get_filename(icon->img);

g_warn_if_fail(filename != NULL);

purple_blist_node_set_string((PurpleBlistNode *)buddy,

"buddy_icon",

filename);

if (icon->checksum && *icon->checksum)

{

purple_blist_node_set_string((PurpleBlistNode *)buddy,

"icon_checksum",

icon->checksum);

}

else

{

purple_blist_node_remove_setting((PurpleBlistNode *)buddy,

"icon_checksum");

}

ref_filename(filename);

}

else if (!icon->img)

{

purple_blist_node_remove_setting((PurpleBlistNode *)buddy, "buddy_icon");

purple_blist_node_remove_setting((PurpleBlistNode *)buddy, "icon_checksum");

}

unref_filename(old_icon);

g_free(old_icon);

buddies = g_slist_delete_link(buddies, buddies);

}

im = purple_conversations_find_im_with_account(username, account);

if (im != NULL)

purple_im_conversation_set_icon(im, icon_to_set);

/* icon's refcount was incremented above */

purple_buddy_icon_unref(icon);

}

void

purple_buddy_icon_set_data(PurpleBuddyIcon *icon, guchar *data,

size_t len, const char *checksum)

{

PurpleImage *old_img;

g_return_if_fail(icon != NULL);

old_img = icon->img;

icon->img = NULL;

if (data != NULL)

{

if (len > 0)

icon->img = purple_buddy_icon_data_new(data, len);

else

g_free(data);

}

g_free(icon->checksum);

icon->checksum = g_strdup(checksum);

purple_buddy_icon_update(icon);

if (old_img)

g_object_unref(old_img);

}

PurpleAccount *

purple_buddy_icon_get_account(const PurpleBuddyIcon *icon)

{

g_return_val_if_fail(icon != NULL, NULL);

return icon->account;

}

const char *

purple_buddy_icon_get_username(const PurpleBuddyIcon *icon)

{

g_return_val_if_fail(icon != NULL, NULL);

return icon->username;

}

const char *

purple_buddy_icon_get_checksum(const PurpleBuddyIcon *icon)

{

g_return_val_if_fail(icon != NULL, NULL);

return icon->checksum;

}

gconstpointer

purple_buddy_icon_get_data(const PurpleBuddyIcon *icon, size_t *len)

{

g_return_val_if_fail(icon != NULL, NULL);

if (icon->img)

{

if (len != NULL)

*len = purple_image_get_data_size(icon->img);

return purple_image_get_data(icon->img);

}

return NULL;

}

const char *

purple_buddy_icon_get_extension(const PurpleBuddyIcon *icon)

{

if (icon->img != NULL)

return purple_image_get_extension(icon->img);

return NULL;

}

void

purple_buddy_icons_set_for_user(PurpleAccount *account, const char *username,

void *icon_data, size_t icon_len,

const char *checksum)

{

GHashTable *icon_cache;

PurpleBuddyIcon *icon = NULL;

g_return_if_fail(account != NULL);

g_return_if_fail(username != NULL);

icon_cache = g_hash_table_lookup(account_cache, account);

if (icon_cache != NULL)

icon = g_hash_table_lookup(icon_cache, username);

if (icon != NULL)

purple_buddy_icon_set_data(icon, icon_data, icon_len, checksum);

else if (icon_data && icon_len > 0)

{

PurpleBuddyIcon *icon = purple_buddy_icon_new(account, username, icon_data, icon_len, checksum);

/* purple_buddy_icon_new() calls

* purple_buddy_icon_set_data(), which calls

* purple_buddy_icon_update(), which has the buddy list

* and conversations take references as appropriate.

* This function doesn't return icon, so we can't

* leave a reference dangling. */

purple_buddy_icon_unref(icon);

}

else

{

/* If the buddy list or a conversation was holding a

* reference, we'd have found the icon in the cache.

* Since we know we're deleting the icon, we only

* need a subset of purple_buddy_icon_update(). */

GSList *buddies = purple_blist_find_buddies(account, username);

while (buddies != NULL)

{

PurpleBuddy *buddy = (PurpleBuddy *)buddies->data;

unref_filename(purple_blist_node_get_string((PurpleBlistNode *)buddy, "buddy_icon"));

purple_blist_node_remove_setting((PurpleBlistNode *)buddy, "buddy_icon");

purple_blist_node_remove_setting((PurpleBlistNode *)buddy, "icon_checksum");

buddies = g_slist_delete_link(buddies, buddies);

}

const gchar *

purple_buddy_icon_get_full_path(PurpleBuddyIcon *icon)

{

const gchar *path;

g_return_val_if_fail(icon != NULL, NULL);

if (icon->img == NULL)

return NULL;

path = purple_image_get_path(icon->img);

if (!g_file_test(path, G_FILE_TEST_EXISTS))

{

return NULL;

}

return path;

}

const char *

purple_buddy_icons_get_checksum_for_user(PurpleBuddy *buddy)

{

return purple_blist_node_get_string((PurpleBlistNode*)buddy,

"icon_checksum");

}

static gboolean

read_icon_file(const char *path, guchar **data, size_t *len)

{

GError *err = NULL;

if (!g_file_get_contents(path, (gchar **)data, len, &err))

{

purple_debug_error("buddyicon", "Error reading %s: %s\n",

path, err->message);

g_error_free(err);

return FALSE;

}

return TRUE;

}

PurpleBuddyIcon *

purple_buddy_icons_find(PurpleAccount *account, const char *username)

{

GHashTable *icon_cache;

PurpleBuddyIcon *icon = NULL;

g_return_val_if_fail(account != NULL, NULL);

g_return_val_if_fail(username != NULL, NULL);

icon_cache = g_hash_table_lookup(account_cache, account);

if ((icon_cache == NULL) || ((icon = g_hash_table_lookup(icon_cache, username)) == NULL))

{

/* The icon is not currently cached in memory--try reading from disk */

PurpleBuddy *b = purple_blist_find_buddy(account, username);

const char *protocol_icon_file;

const char *dirname;

gboolean caching;

gchar *path;

guchar *data;

size_t len;

if (!b)

return NULL;

protocol_icon_file = purple_blist_node_get_string((PurpleBlistNode*)b, "buddy_icon");

if (protocol_icon_file == NULL)

return NULL;

dirname = purple_buddy_icons_get_cache_dir();

caching = purple_buddy_icons_is_caching();

/* By disabling caching temporarily, we avoid a loop

* and don't have to add special code through several

* functions. */

purple_buddy_icons_set_caching(FALSE);

path = g_build_filename(dirname, protocol_icon_file, NULL);

if (read_icon_file(path, &data, &len)) {

const char *checksum;

icon = purple_buddy_icon_create(account, username);

icon->img = NULL;

checksum = purple_blist_node_get_string((PurpleBlistNode *)b,

"icon_checksum");

purple_buddy_icon_set_data(icon, data, len, checksum);

} else {

delete_buddy_icon_settings((PurpleBlistNode *)b, "buddy_icon");

}

g_free(path);

purple_buddy_icons_set_caching(caching);

}

return (icon ? purple_buddy_icon_ref(icon) : NULL);

}

PurpleImage *

purple_buddy_icons_find_account_icon(PurpleAccount *account)

{

PurpleImage *img;

const char *account_icon_file;

const char *dirname;

char *path;

guchar *data;

size_t len;

g_return_val_if_fail(account != NULL, NULL);

img = g_hash_table_lookup(pointer_icon_cache, account);

if (img) {

g_object_ref(img);

return img;

}

account_icon_file = purple_account_get_string(account, "buddy_icon", NULL);

if (account_icon_file == NULL)

return NULL;

dirname = purple_buddy_icons_get_cache_dir();

path = g_build_filename(dirname, account_icon_file, NULL);

if (read_icon_file(path, &data, &len)) {

g_free(path);

img = purple_buddy_icons_set_account_icon(account, data, len);

g_object_ref(img);

return img;

}

g_free(path);

return NULL;

}

PurpleImage *

purple_buddy_icons_set_account_icon(PurpleAccount *account,

guchar *icon_data, size_t icon_len)

{

PurpleImage *old_img;

PurpleImage *img = NULL;

char *old_icon;

if (icon_data != NULL && icon_len > 0) {

img = purple_buddy_icon_data_new(icon_data, icon_len);

}

old_icon = g_strdup(purple_account_get_string(account, "buddy_icon", NULL));

if (img && purple_buddy_icons_is_caching())

{

const char *filename = image_get_filename(img);

g_warn_if_fail(filename != NULL);

purple_account_set_string(account, "buddy_icon", filename);

purple_account_set_int(account, "buddy_icon_timestamp", time(NULL));

ref_filename(filename);

}

else

{

purple_account_set_string(account, "buddy_icon", NULL);

purple_account_set_int(account, "buddy_icon_timestamp", 0);

}

unref_filename(old_icon);

old_img = g_hash_table_lookup(pointer_icon_cache, account);

if (img)

g_hash_table_insert(pointer_icon_cache, account, img);

else

g_hash_table_remove(pointer_icon_cache, account);

if (!purple_account_is_disconnected(account))

{

PurpleConnection *gc;

PurpleProtocol *protocol;

gc = purple_account_get_connection(account);

protocol = purple_connection_get_protocol(gc);

if (protocol)

purple_protocol_server_iface_set_buddy_icon(protocol, gc, img);

}

if (old_img)

g_object_unref(old_img);

else if (old_icon)

{

/* The old icon may not have been loaded into memory. In that

* case, we'll need to uncache the filename. The filenames

* are ref-counted, so this is safe. */

purple_buddy_icon_data_uncache_file(old_icon);

}

g_free(old_icon);

return img;

}

time_t

purple_buddy_icons_get_account_icon_timestamp(PurpleAccount *account)

{

time_t ret;

g_return_val_if_fail(account != NULL, 0);

ret = purple_account_get_int(account, "buddy_icon_timestamp", 0);

/* This deals with migration cases. */

if (ret == 0 && purple_account_get_string(account, "buddy_icon", NULL) != NULL)

{

ret = time(NULL);

purple_account_set_int(account, "buddy_icon_timestamp", ret);

}

return ret;

}

gboolean

purple_buddy_icons_node_has_custom_icon(PurpleBlistNode *node)

{

g_return_val_if_fail(node != NULL, FALSE);

return (purple_blist_node_get_string(node, "custom_buddy_icon") != NULL);

}

PurpleImage *

purple_buddy_icons_node_find_custom_icon(PurpleBlistNode *node)

{

char *path;

size_t len;

guchar *data;

PurpleImage *img;

const char *custom_icon_file, *dirname;

g_return_val_if_fail(node != NULL, NULL);

img = g_hash_table_lookup(pointer_icon_cache, node);

if (img) {

g_object_ref(img);

return img;

}

custom_icon_file = purple_blist_node_get_string(node,

"custom_buddy_icon");

if (custom_icon_file == NULL)

return NULL;

dirname = purple_buddy_icons_get_cache_dir();

path = g_build_filename(dirname, custom_icon_file, NULL);

if (read_icon_file(path, &data, &len)) {

g_free(path);

img = purple_buddy_icons_node_set_custom_icon(node, data, len);

g_object_ref(img);

return img;

}

g_free(path);

return NULL;

}

PurpleImage *

purple_buddy_icons_node_set_custom_icon(PurpleBlistNode *node,

guchar *icon_data, size_t icon_len)

{

char *old_icon;

PurpleImage *old_img;

PurpleImage *img = NULL;

g_return_val_if_fail(node != NULL, NULL);

if (!PURPLE_IS_CONTACT(node) &&

!PURPLE_IS_CHAT(node) &&

!PURPLE_IS_GROUP(node)) {

return NULL;

}

old_img = g_hash_table_lookup(pointer_icon_cache, node);

if (icon_data != NULL && icon_len > 0) {

img = purple_buddy_icon_data_new(icon_data, icon_len);

}

old_icon = g_strdup(purple_blist_node_get_string(node,

"custom_buddy_icon"));

if (img && purple_buddy_icons_is_caching()) {

const char *filename = image_get_filename(img);

g_warn_if_fail(filename);

purple_blist_node_set_string(node, "custom_buddy_icon",

filename);

ref_filename(filename);

} else {

purple_blist_node_remove_setting(node, "custom_buddy_icon");

}

unref_filename(old_icon);

if (img)

g_hash_table_insert(pointer_icon_cache, node, img);

else

g_hash_table_remove(pointer_icon_cache, node);

if (PURPLE_IS_CONTACT(node)) {

PurpleBlistNode *child;

for (child = purple_blist_node_get_first_child(node);

child;

child = purple_blist_node_get_sibling_next(child))

{

PurpleBuddy *buddy;

PurpleIMConversation *im;

if (!PURPLE_IS_BUDDY(child))

continue;

buddy = (PurpleBuddy *)child;

im = purple_conversations_find_im_with_account(purple_buddy_get_name(buddy), purple_buddy_get_account(buddy));

if (im)

purple_conversation_update(PURPLE_CONVERSATION(im), PURPLE_CONVERSATION_UPDATE_ICON);

/* Is this call necessary anymore? Can the buddies

* themselves need updating when the custom buddy

* icon changes? */

purple_blist_update_node(purple_blist_get_default(),

PURPLE_BLIST_NODE(buddy));

}

} else if (PURPLE_IS_CHAT(node)) {

PurpleChatConversation *chat = NULL;

chat = purple_conversations_find_chat_with_account(purple_chat_get_name((PurpleChat*)node), purple_chat_get_account((PurpleChat*)node));

if (chat) {

purple_conversation_update(PURPLE_CONVERSATION(chat), PURPLE_CONVERSATION_UPDATE_ICON);

}

purple_blist_update_node(purple_blist_get_default(), node);

if (old_img) {

g_object_unref(old_img);

} else if (old_icon) {

/* The old icon may not have been loaded into memory. In that

* case, we'll need to uncache the filename. The filenames

* are ref-counted, so this is safe. */

purple_buddy_icon_data_uncache_file(old_icon);

}

g_free(old_icon);

return img;

}

PurpleImage *

purple_buddy_icons_node_set_custom_icon_from_file(PurpleBlistNode *node,

const gchar *filename)

{

size_t len = 0;

guchar *data = NULL;

g_return_val_if_fail(node != NULL, NULL);

if (!PURPLE_IS_CONTACT(node) &&

!PURPLE_IS_CHAT(node) &&

!PURPLE_IS_GROUP(node)) {

return NULL;

}

if (filename != NULL) {

if (!read_icon_file(filename, &data, &len)) {

return NULL;

}

return purple_buddy_icons_node_set_custom_icon(node, data, len);

}

static void

delete_buddy_icon_settings(PurpleBlistNode *node, const char *setting_name)

{

purple_blist_node_remove_setting(node, setting_name);

if (purple_strequal(setting_name, "buddy_icon"))

{

purple_blist_node_remove_setting(node, "avatar_hash");

purple_blist_node_remove_setting(node, "icon_checksum");

}

void

_purple_buddy_icons_account_loaded_cb()

{

const char *dirname = purple_buddy_icons_get_cache_dir();

GList *cur;

for (cur = purple_accounts_get_all(); cur != NULL; cur = cur->next)

{

PurpleAccount *account = cur->data;

const char *account_icon_file = purple_account_get_string(account, "buddy_icon", NULL);

if (account_icon_file != NULL)

{

char *path = g_build_filename(dirname, account_icon_file, NULL);

if (!g_file_test(path, G_FILE_TEST_EXISTS))

{

purple_account_set_string(account, "buddy_icon", NULL);

} else {

ref_filename(account_icon_file);

}

g_free(path);

}

void

_purple_buddy_icons_blist_loaded_cb()

{

PurpleBlistNode *node = purple_blist_get_default_root();

const char *dirname = purple_buddy_icons_get_cache_dir();

while (node != NULL)

{

if (PURPLE_IS_BUDDY(node))

{

const char *filename;

filename = purple_blist_node_get_string(node, "buddy_icon");

if (filename != NULL)

{

char *path = g_build_filename(dirname, filename, NULL);

if (!g_file_test(path, G_FILE_TEST_EXISTS))

{

purple_blist_node_remove_setting(node,

"buddy_icon");

purple_blist_node_remove_setting(node,

"icon_checksum");

}

else

ref_filename(filename);

g_free(path);

}

else if (PURPLE_IS_CONTACT(node) ||

PURPLE_IS_CHAT(node) ||

PURPLE_IS_GROUP(node))

{

const char *filename;

filename = purple_blist_node_get_string(node, "custom_buddy_icon");

if (filename != NULL)

{

char *path = g_build_filename(dirname, filename, NULL);

if (!g_file_test(path, G_FILE_TEST_EXISTS))

{

purple_blist_node_remove_setting(node,

"custom_buddy_icon");

}

else

ref_filename(filename);

g_free(path);

}

node = purple_blist_node_next(node, TRUE);

}

void

purple_buddy_icons_set_caching(gboolean caching)

{

icon_caching = caching;

}

gboolean

purple_buddy_icons_is_caching(void)

{

return icon_caching;

}

void

purple_buddy_icons_set_cache_dir(const char *dir)

{

g_return_if_fail(dir != NULL);

g_free(cache_dir);

cache_dir = g_strdup(dir);

}

const char *

purple_buddy_icons_get_cache_dir(void)

{

return cache_dir;

}

void *

purple_buddy_icons_get_handle()

{

static int handle;

return &handle;

}

void

purple_buddy_icons_init()

{

account_cache = g_hash_table_new_full(

g_direct_hash, g_direct_equal,

NULL, (GFreeFunc)g_hash_table_destroy);

icon_data_cache = g_hash_table_new_full(g_str_hash, g_str_equal,

g_free, NULL);

icon_file_cache = g_hash_table_new_full(g_str_hash, g_str_equal,

g_free, NULL);

pointer_icon_cache = g_hash_table_new(g_direct_hash, g_direct_equal);

if (!cache_dir)

cache_dir = g_build_filename(purple_cache_dir(), "icons", NULL);

}

void

purple_buddy_icons_uninit()

{

purple_signals_disconnect_by_handle(purple_buddy_icons_get_handle());

g_hash_table_destroy(account_cache);

g_hash_table_destroy(icon_data_cache);

g_hash_table_destroy(icon_file_cache);

g_hash_table_destroy(pointer_icon_cache);

g_free(cache_dir);

cache_dir = NULL;

}

GType

purple_buddy_icon_get_type(void)

{

static GType type = 0;

if (type == 0) {

type = g_boxed_type_register_static("PurpleBuddyIcon",

(GBoxedCopyFunc)purple_buddy_icon_ref,

(GBoxedFreeFunc)purple_buddy_icon_unref);

}

return type;

}

PurpleBuddyIconSpec *

purple_buddy_icon_spec_new(char *format, int min_width, int min_height,

int max_width, int max_height, size_t max_filesize,

PurpleBuddyIconScaleFlags scale_rules)

{

PurpleBuddyIconSpec *icon_spec;

icon_spec = g_new0(PurpleBuddyIconSpec, 1);

icon_spec->format = format;

icon_spec->min_width = min_width;

icon_spec->min_height = min_height;

icon_spec->max_width = max_width;

icon_spec->max_height = max_height;

icon_spec->max_filesize = max_filesize;

icon_spec->scale_rules = scale_rules;

return icon_spec;

}

static PurpleBuddyIconSpec *

purple_buddy_icon_spec_copy(PurpleBuddyIconSpec *icon_spec)

{

PurpleBuddyIconSpec *icon_spec_copy;

g_return_val_if_fail(icon_spec != NULL, NULL);

icon_spec_copy = g_new0(PurpleBuddyIconSpec, 1);

*icon_spec_copy = *icon_spec;

return icon_spec_copy;

}

void purple_buddy_icon_spec_get_scaled_size(PurpleBuddyIconSpec *spec,

int *width, int *height)

{

int new_width, new_height;

new_width = *width;

new_height = *height;

if (*width < spec->min_width)

new_width = spec->min_width;

else if (*width > spec->max_width)

new_width = spec->max_width;

if (*height < spec->min_height)

new_height = spec->min_height;

else if (*height > spec->max_height)

new_height = spec->max_height;

/* preserve aspect ratio */

if ((double)*height * (double)new_width >

(double)*width * (double)new_height) {

new_width = 0.5 + (double)*width * (double)new_height / (double)*height;

} else {

new_height = 0.5 + (double)*height * (double)new_width / (double)*width;

}

*width = new_width;

*height = new_height;

}

GType

purple_buddy_icon_spec_get_type(void)

{

static GType type = 0;

if (type == 0) {

type = g_boxed_type_register_static("PurpleBuddyIconSpec",

(GBoxedCopyFunc)purple_buddy_icon_spec_copy,

(GBoxedFreeFunc)g_free);

}

return type;

}

pidgin/pidgin