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-rw-r--r--camel/camel-store.c778
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* camel-store.c : Abstract class for an email store */
-
-/*
- *
- * Authors:
- * Bertrand Guiheneuf <bertrand@helixcode.com>
- * Dan Winship <danw@helixcode.com>
- *
- * Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com)
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-#include <config.h>
-#include <string.h>
-
-#include "camel-store.h"
-#include "camel-folder.h"
-#include "camel-exception.h"
-
-#include "camel-private.h"
-
-static CamelServiceClass *parent_class = NULL;
-
-/* Returns the class for a CamelStore */
-#define CS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
-
-static CamelFolder *get_folder (CamelStore *store, const char *folder_name,
- guint32 flags, CamelException *ex);
-static void delete_folder (CamelStore *store, const char *folder_name,
- CamelException *ex);
-static void rename_folder (CamelStore *store, const char *old_name,
- const char *new_name, CamelException *ex);
-
-static char *get_folder_name (CamelStore *store, const char *folder_name,
- CamelException *ex);
-static char *get_root_folder_name (CamelStore *store, CamelException *ex);
-static char *get_default_folder_name (CamelStore *store, CamelException *ex);
-
-static void store_sync (CamelStore *store, CamelException *ex);
-static CamelFolderInfo *get_folder_info (CamelStore *store, const char *top,
- gboolean fast, gboolean recursive,
- gboolean subscribed_only,
- CamelException *ex);
-static void free_folder_info (CamelStore *store, CamelFolderInfo *tree);
-
-static CamelFolder *lookup_folder (CamelStore *store, const char *folder_name);
-static void cache_folder (CamelStore *store, const char *folder_name,
- CamelFolder *folder);
-static void uncache_folder (CamelStore *store, CamelFolder *folder);
-
-static gboolean folder_subscribed (CamelStore *store, const char *folder_name);
-static void subscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex);
-static void unsubscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex);
-
-static void
-camel_store_class_init (CamelStoreClass *camel_store_class)
-{
- parent_class = CAMEL_SERVICE_CLASS (camel_type_get_global_classfuncs (camel_service_get_type ()));
-
- /* virtual method definition */
- camel_store_class->get_folder = get_folder;
- camel_store_class->delete_folder = delete_folder;
- camel_store_class->rename_folder = rename_folder;
- camel_store_class->get_folder_name = get_folder_name;
- camel_store_class->get_root_folder_name = get_root_folder_name;
- camel_store_class->get_default_folder_name = get_default_folder_name;
- camel_store_class->sync = store_sync;
- camel_store_class->get_folder_info = get_folder_info;
- camel_store_class->free_folder_info = free_folder_info;
- camel_store_class->lookup_folder = lookup_folder;
- camel_store_class->cache_folder = cache_folder;
- camel_store_class->uncache_folder = uncache_folder;
- camel_store_class->folder_subscribed = folder_subscribed;
- camel_store_class->subscribe_folder = subscribe_folder;
- camel_store_class->unsubscribe_folder = unsubscribe_folder;
-}
-
-static void
-camel_store_init (void *o, void *k)
-{
- CamelStore *store = o;
-
- if (store->folders == NULL)
- store->folders = g_hash_table_new (g_str_hash, g_str_equal);
- store->flags = 0;
-
- store->priv = g_malloc0(sizeof(*store->priv));
-#ifdef ENABLE_THREADS
- store->priv->folder_lock = g_mutex_new();
- store->priv->cache_lock = g_mutex_new();
-#endif
-}
-
-static void
-camel_store_finalize (CamelObject *object)
-{
- CamelStore *store = CAMEL_STORE (object);
-
- if (store->folders) {
- if (g_hash_table_size (store->folders) != 0) {
- g_warning ("Folder cache for store %p contains "
- "%d folders at destruction.", store,
- g_hash_table_size (store->folders));
- }
- g_hash_table_destroy (store->folders);
- }
-
-#ifdef ENABLE_THREADS
- g_mutex_free(store->priv->folder_lock);
- g_mutex_free(store->priv->cache_lock);
-#endif
- g_free(store->priv);
-}
-
-
-CamelType
-camel_store_get_type (void)
-{
- static CamelType camel_store_type = CAMEL_INVALID_TYPE;
-
- if (camel_store_type == CAMEL_INVALID_TYPE) {
- camel_store_type = camel_type_register (CAMEL_SERVICE_TYPE, "CamelStore",
- sizeof (CamelStore),
- sizeof (CamelStoreClass),
- (CamelObjectClassInitFunc) camel_store_class_init,
- NULL,
- (CamelObjectInitFunc) camel_store_init,
- (CamelObjectFinalizeFunc) camel_store_finalize );
- }
-
- return camel_store_type;
-}
-
-
-static CamelFolder *
-get_folder(CamelStore *store, const char *folder_name, guint32 flags, CamelException *ex)
-{
- g_warning("CamelStore::get_folder not implemented for `%s'",
- camel_type_to_name(CAMEL_OBJECT_GET_TYPE(store)));
- return NULL;
-}
-
-static void
-delete_folder (CamelStore *store, const char *folder_name, CamelException *ex)
-{
- g_warning ("CamelStore::delete_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-static void
-rename_folder (CamelStore *store, const char *old_name,
- const char *new_name, CamelException *ex)
-{
- g_warning ("CamelStore::rename_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-
-/* CamelStore::get_folder_name should:
- * a) make sure that the provided name is valid
- * b) return it in canonical form, in allocated memory.
- *
- * This is used to make sure that duplicate names for the same folder
- * don't result in duplicate cache entries.
- */
-static char *
-get_folder_name (CamelStore *store, const char *folder_name,
- CamelException *ex)
-{
- g_warning ("CamelStore::get_folder_name not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
- return NULL;
-}
-
-static char *
-get_root_folder_name (CamelStore *store, CamelException *ex)
-{
- return g_strdup ("/");
-}
-
-static char *
-get_default_folder_name (CamelStore *store, CamelException *ex)
-{
- return CS_CLASS (store)->get_root_folder_name (store, ex);
-}
-
-static CamelFolder *
-lookup_folder (CamelStore *store, const char *folder_name)
-{
- CamelFolder *folder = NULL;
-
- CAMEL_STORE_LOCK(store, cache_lock);
-
- if (store->folders) {
- folder = g_hash_table_lookup (store->folders, folder_name);
- if (folder)
- camel_object_ref(CAMEL_OBJECT(folder));
- }
-
- CAMEL_STORE_UNLOCK(store, cache_lock);
-
- return folder;
-}
-
-static void folder_finalize (CamelObject *folder, gpointer event_data, gpointer user_data)
-{
- CS_CLASS (user_data)->uncache_folder (CAMEL_STORE(user_data), CAMEL_FOLDER(folder));
-}
-
-static void
-cache_folder (CamelStore *store, const char *folder_name, CamelFolder *folder)
-{
- CAMEL_STORE_LOCK(store, cache_lock);
-
- if (store->folders) {
- if (g_hash_table_lookup (store->folders, folder_name)) {
- g_warning ("Caching folder %s that already exists.", folder_name);
- }
- g_hash_table_insert (store->folders, g_strdup (folder_name), folder);
-
- camel_object_hook_event (CAMEL_OBJECT (folder), "finalize", folder_finalize, store);
- }
-
- CAMEL_STORE_UNLOCK(store, cache_lock);
-
- /*
- * gt_k so as not to get caught by my little gt_k cleanliness detector.
- *
- * gt_k_signal_connect_object (CAMEL_OBJECT (folder), "destroy",
- * GT_K_SIGNAL_FUNC (CS_CLASS (store)->uncache_folder),
- * CAMEL_OBJECT (store));
- */
-}
-
-static gboolean
-folder_matches (gpointer key, gpointer value, gpointer user_data)
-{
- if (value == user_data) {
- g_free (key);
- return TRUE;
- } else
- return FALSE;
-}
-
-static void
-uncache_folder (CamelStore *store, CamelFolder *folder)
-{
- CAMEL_STORE_LOCK(store, cache_lock);
-
- g_hash_table_foreach_remove (store->folders, folder_matches, folder);
-
- CAMEL_STORE_UNLOCK(store, cache_lock);
-}
-
-
-static CamelFolder *
-get_folder_internal(CamelStore *store, const char *folder_name, guint32 flags, CamelException *ex)
-{
- CamelFolder *folder = NULL;
-
- /* NB: we already have folder_lock */
-
- /* Try cache first. */
- folder = CS_CLASS(store)->lookup_folder(store, folder_name);
-
- if (!folder) {
- folder = CS_CLASS(store)->get_folder(store, folder_name, flags, ex);
- if (!folder)
- return NULL;
-
- CS_CLASS(store)->cache_folder(store, folder_name, folder);
- }
-
- return folder;
-}
-
-
-
-/**
- * camel_store_get_folder: Return the folder corresponding to a path.
- * @store: a CamelStore
- * @folder_name: name of the folder to get
- * @flags: folder flags (create, save body index, etc)
- * @ex: a CamelException
- *
- * Returns the folder corresponding to the path @folder_name. If the
- * path begins with the separator character, it is relative to the
- * root folder. Otherwise, it is relative to the default folder.
- *
- * Return value: the folder
- **/
-CamelFolder *
-camel_store_get_folder(CamelStore *store, const char *folder_name, guint32 flags, CamelException *ex)
-{
- char *name;
- CamelFolder *folder = NULL;
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- name = CS_CLASS(store)->get_folder_name(store, folder_name, ex);
- if (name) {
- folder = get_folder_internal(store, name, flags, ex);
- g_free (name);
- }
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-
- return folder;
-}
-
-
-/**
- * camel_store_delete_folder: Delete the folder corresponding to a path.
- * @store: a CamelStore
- * @folder_name: name of the folder to delete
- * @ex: a CamelException
- *
- * Deletes the named folder. The folder must be empty.
- **/
-void
-camel_store_delete_folder (CamelStore *store, const char *folder_name,
- CamelException *ex)
-{
- char *name;
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- name = CS_CLASS (store)->get_folder_name (store, folder_name, ex);
- if (name) {
- CS_CLASS (store)->delete_folder (store, name, ex);
- g_free (name);
- }
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-}
-
-/**
- * camel_store_rename_folder:
- * @store:
- * @old_name:
- * @new_name:
- * @ex:
- *
- * Rename a named folder to a new name.
- **/
-void camel_store_rename_folder (CamelStore *store,
- const char *old_name,
- const char *new_name,
- CamelException *ex)
-{
- char *old, *new;
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- old = CS_CLASS (store)->get_folder_name(store, old_name, ex);
- if (old) {
- new = CS_CLASS (store)->get_folder_name(store, new_name, ex);
- if (new) {
- CS_CLASS (store)->rename_folder(store, old, new, ex);
- g_free(new);
- }
- g_free(old);
- }
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-}
-
-
-/**
- * camel_store_get_root_folder: return the top-level folder
- *
- * Returns the folder which is at the top of the folder hierarchy.
- * This folder may or may not be the same as the default folder.
- *
- * Return value: the top-level folder.
- **/
-CamelFolder *
-camel_store_get_root_folder (CamelStore *store, CamelException *ex)
-{
- char *name;
- CamelFolder *folder = NULL;
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- name = CS_CLASS (store)->get_root_folder_name (store, ex);
- if (name) {
- folder = get_folder_internal (store, name, CAMEL_STORE_FOLDER_CREATE, ex);
- g_free (name);
- }
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-
- return folder;
-}
-
-/**
- * camel_store_get_default_folder: return the store default folder
- *
- * The default folder is the folder which is presented to the user in
- * the default configuration. This defaults to the root folder if
- * the store doesn't override it.
- *
- * Return value: the default folder.
- **/
-CamelFolder *
-camel_store_get_default_folder (CamelStore *store, CamelException *ex)
-{
- char *name;
- CamelFolder *folder = NULL;
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- name = CS_CLASS (store)->get_default_folder_name (store, ex);
- if (name) {
- folder = get_folder_internal (store, name, CAMEL_STORE_FOLDER_CREATE, ex);
- g_free (name);
- }
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-
- return folder;
-}
-
-
-static void
-sync_folder (gpointer key, gpointer folder, gpointer ex)
-{
- if (!camel_exception_is_set (ex))
- camel_folder_sync (folder, FALSE, ex);
-}
-
-static void
-store_sync (CamelStore *store, CamelException *ex)
-{
- CAMEL_STORE_LOCK(store, cache_lock);
- g_hash_table_foreach (store->folders, sync_folder, ex);
- CAMEL_STORE_UNLOCK(store, cache_lock);
-}
-
-/**
- * camel_store_sync:
- * @store: a CamelStore
- * @ex: a CamelException
- *
- * Syncs any changes that have been made to the store object and its
- * folders with the real store.
- **/
-void
-camel_store_sync (CamelStore *store, CamelException *ex)
-{
- g_return_if_fail (CAMEL_IS_STORE (store));
-
- CS_CLASS (store)->sync (store, ex);
-}
-
-
-static CamelFolderInfo *
-get_folder_info (CamelStore *store, const char *top,
- gboolean fast, gboolean recursive,
- gboolean subscribed_only,
- CamelException *ex)
-{
- g_warning ("CamelStore::get_folder_info not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
- return NULL;
-}
-
-/**
- * camel_store_get_folder_info:
- * @store: a CamelStore
- * @top: the name of the folder to start from
- * @fast: whether or not to do a "fast" scan.
- * @recursive: whether to include information for subfolders
- * @ex: a CamelException
- *
- * This fetches information about the folder structure of @store,
- * starting with @top, and returns a tree of CamelFolderInfo
- * structures. If @fast is %TRUE, the message_count or
- * unread_message_count fields of some or all of the structures may be
- * set to -1, if the store cannot determine that information quickly.
- * If @recursive is %TRUE, the returned tree will include all levels of
- * hierarchy below @top. If it is %FALSE, it will only include the
- * immediate subfolders of @top.
- *
- * Return value: a CamelFolderInfo tree, which must be freed with
- * camel_store_free_folder_info.
- **/
-CamelFolderInfo *
-camel_store_get_folder_info (CamelStore *store, const char *top,
- gboolean fast, gboolean recursive,
- gboolean subscribed_only,
- CamelException *ex)
-{
- CamelFolderInfo *ret;
-
- g_return_val_if_fail (CAMEL_IS_STORE (store), NULL);
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- ret = CS_CLASS (store)->get_folder_info (store, top, fast, recursive, subscribed_only, ex);
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-
- return ret;
-}
-
-
-static void
-free_folder_info (CamelStore *store, CamelFolderInfo *fi)
-{
- g_warning ("CamelStore::free_folder_info not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-/**
- * camel_store_free_folder_info:
- * @store: a CamelStore
- * @tree: the tree returned by camel_store_get_folder_info()
- *
- * Frees the data returned by camel_store_get_folder_info().
- **/
-void
-camel_store_free_folder_info (CamelStore *store, CamelFolderInfo *fi)
-{
- g_return_if_fail (CAMEL_IS_STORE (store));
-
- CS_CLASS (store)->free_folder_info (store, fi);
-}
-
-/**
- * camel_store_free_folder_info_full:
- * @store: a CamelStore
- * @tree: the tree returned by camel_store_get_folder_info()
- *
- * An implementation for CamelStore::free_folder_info. Frees all
- * of the data.
- **/
-void
-camel_store_free_folder_info_full (CamelStore *store, CamelFolderInfo *fi)
-{
- camel_folder_info_free (fi);
-}
-
-/**
- * camel_store_free_folder_info_nop:
- * @store: a CamelStore
- * @tree: the tree returned by camel_store_get_folder_info()
- *
- * An implementation for CamelStore::free_folder_info. Does nothing.
- **/
-void
-camel_store_free_folder_info_nop (CamelStore *store, CamelFolderInfo *fi)
-{
- ;
-}
-
-
-/**
- * camel_folder_info_free:
- * @fi: the CamelFolderInfo
- *
- * Frees @fi.
- **/
-void
-camel_folder_info_free (CamelFolderInfo *fi)
-{
- if (fi) {
- camel_folder_info_free (fi->sibling);
- camel_folder_info_free (fi->child);
- g_free (fi->name);
- g_free (fi->full_name);
- g_free (fi->url);
- g_free (fi);
- }
-}
-
-
-/**
- * camel_folder_info_build:
- * @folders: an array of CamelFolderInfo
- * @namespace: an ignorable prefix on the folder names
- * @separator: the hieararchy separator character
- * @short_names: %TRUE if the (short) name of a folder is the part after
- * the last @separator in the full name. %FALSE if it is the full name.
- *
- * This takes an array of folders and attaches them together according
- * to the hierarchy described by their full_names and @separator. If
- * @namespace is non-%NULL, then it will be ignored as a full_name
- * prefix, for purposes of comparison. If necessary,
- * camel_folder_info_build will create additional CamelFolderInfo with
- * %NULL urls to fill in gaps in the tree. The value of @short_names
- * is used in constructing the names of these intermediate folders.
- *
- * Return value: the top level of the tree of linked folder info.
- **/
-CamelFolderInfo *
-camel_folder_info_build (GPtrArray *folders, const char *namespace,
- char separator, gboolean short_names)
-{
- CamelFolderInfo *fi, *pfi, *top = NULL;
- GHashTable *hash;
- char *name, *p, *pname;
- int i, nlen;
-
- if (!namespace)
- namespace = "";
- nlen = strlen (namespace);
-
- /* Hash the folders. */
- hash = g_hash_table_new (g_str_hash, g_str_equal);
- for (i = 0; i < folders->len; i++) {
- fi = folders->pdata[i];
- if (!strncmp (namespace, fi->full_name, nlen))
- name = fi->full_name + nlen;
- else
- name = fi->full_name;
- if (*name == separator)
- name++;
- g_hash_table_insert (hash, name, fi);
- }
-
- /* Now find parents. */
- for (i = 0; i < folders->len; i++) {
- fi = folders->pdata[i];
- if (!strncmp (namespace, fi->full_name, nlen))
- name = fi->full_name + nlen;
- else
- name = fi->full_name;
- if (*name == separator)
- name++;
- p = strrchr (name, separator);
- if (p) {
- pname = g_strndup (name, p - name);
- pfi = g_hash_table_lookup (hash, pname);
- if (pfi) {
- g_free (pname);
- } else {
- pfi = g_new0 (CamelFolderInfo, 1);
- pfi->full_name = pname;
- if (short_names) {
- pfi->name = strrchr (pname, separator);
- if (pfi->name)
- pfi->name = g_strdup (pfi->name + 1);
- else
- pfi->name = g_strdup (pname);
- } else
- pfi->name = g_strdup (pname);
- g_hash_table_insert (hash, pname, pfi);
- g_ptr_array_add (folders, pfi);
- }
- fi->sibling = pfi->child;
- fi->parent = pfi;
- pfi->child = fi;
- } else if (!top)
- top = fi;
- }
- g_hash_table_destroy (hash);
-
- /* Link together the top-level folders */
- for (i = 0; i < folders->len; i++) {
- fi = folders->pdata[i];
- if (fi->parent || fi == top)
- continue;
- if (top)
- fi->sibling = top;
- top = fi;
- }
-
- return top;
-}
-
-gboolean
-camel_store_supports_subscriptions (CamelStore *store)
-{
- return (store->flags & CAMEL_STORE_SUBSCRIPTIONS);
-}
-
-
-static gboolean
-folder_subscribed (CamelStore *store, const char *folder_name)
-{
- g_warning ("CamelStore::folder_subscribed not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
- return FALSE;
-}
-
-/**
- * camel_store_folder_subscribed: Tell whether or not a folder has been subscribed to.
- * @store: a CamelStore
- * @folder_name: the folder on which we're querying subscribed status.
- * Return value: TRUE if folder is subscribed, FALSE if not.
- **/
-gboolean
-camel_store_folder_subscribed (CamelStore *store,
- const char *folder_name)
-{
- gboolean ret;
-
- g_return_val_if_fail (CAMEL_IS_STORE (store), FALSE);
- g_return_val_if_fail (store->flags & CAMEL_STORE_SUBSCRIPTIONS, FALSE);
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- ret = CS_CLASS (store)->folder_subscribed (store, folder_name);
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-
- return ret;
-}
-
-static void
-subscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex)
-{
- g_warning ("CamelStore::subscribe_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-/**
- * camel_store_subscribe_folder: marks a folder as subscribed.
- * @store: a CamelStore
- * @folder_name: the folder to subscribe to.
- **/
-void
-camel_store_subscribe_folder (CamelStore *store,
- const char *folder_name,
- CamelException *ex)
-{
- g_return_if_fail (CAMEL_IS_STORE (store));
- g_return_if_fail (store->flags & CAMEL_STORE_SUBSCRIPTIONS);
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- CS_CLASS (store)->subscribe_folder (store, folder_name, ex);
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-}
-
-static void
-unsubscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex)
-{
- g_warning ("CamelStore::unsubscribe_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-
-/**
- * camel_store_unsubscribe_folder: marks a folder as unsubscribed.
- * @store: a CamelStore
- * @folder_name: the folder to unsubscribe from.
- **/
-void
-camel_store_unsubscribe_folder (CamelStore *store,
- const char *folder_name,
- CamelException *ex)
-{
- g_return_if_fail (CAMEL_IS_STORE (store));
- g_return_if_fail (store->flags & CAMEL_STORE_SUBSCRIPTIONS);
-
- CAMEL_STORE_LOCK(store, folder_lock);
-
- CS_CLASS (store)->unsubscribe_folder (store, folder_name, ex);
-
- CAMEL_STORE_UNLOCK(store, folder_lock);
-}