diff options
Diffstat (limited to 'camel/providers/imap/camel-imap-message-cache.c')
| -rw-r--r-- | camel/providers/imap/camel-imap-message-cache.c | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/camel/providers/imap/camel-imap-message-cache.c b/camel/providers/imap/camel-imap-message-cache.c deleted file mode 100644 index 559c6d2f88..0000000000 --- a/camel/providers/imap/camel-imap-message-cache.c +++ /dev/null @@ -1,527 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* camel-imap-message-cache.c: Class for an IMAP message cache */ - -/* - * Author: - * Dan Winship <danw@ximian.com> - * - * Copyright (C) 2001 Ximian, Inc. (www.ximian.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * 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 - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <sys/types.h> -#include <dirent.h> -#include <errno.h> -#include <string.h> -#include <ctype.h> - -#include "camel-imap-message-cache.h" -#include "camel-data-wrapper.h" -#include "camel-exception.h" -#include "camel-stream-fs.h" - -static void finalize (CamelImapMessageCache *cache); -static void stream_finalize (CamelObject *stream, gpointer event_data, gpointer user_data); - - -CamelType -camel_imap_message_cache_get_type (void) -{ - static CamelType camel_imap_message_cache_type = CAMEL_INVALID_TYPE; - - if (camel_imap_message_cache_type == CAMEL_INVALID_TYPE) { - camel_imap_message_cache_type = camel_type_register ( - CAMEL_OBJECT_TYPE, "CamelImapMessageCache", - sizeof (CamelImapMessageCache), - sizeof (CamelImapMessageCacheClass), - NULL, - NULL, - NULL, - (CamelObjectFinalizeFunc) finalize); - } - - return camel_imap_message_cache_type; -} - -static void -free_part (gpointer key, gpointer value, gpointer data) -{ - if (value) { - if (strchr (key, '.')) { - camel_object_unhook_event (value, "finalize", - stream_finalize, data); - camel_object_unref (value); - } else - g_ptr_array_free (value, TRUE); - } - g_free (key); -} - -static void -finalize (CamelImapMessageCache *cache) -{ - if (cache->path) - g_free (cache->path); - if (cache->parts) { - g_hash_table_foreach (cache->parts, free_part, cache); - g_hash_table_destroy (cache->parts); - } - if (cache->cached) - g_hash_table_destroy (cache->cached); -} - -static void -cache_put (CamelImapMessageCache *cache, const char *uid, const char *key, - CamelStream *stream) -{ - char *hash_key; - GPtrArray *subparts; - gpointer okey, ostream; - guint32 uidval; - - uidval = strtoul (uid, NULL, 10); - if (uidval > cache->max_uid) - cache->max_uid = uidval; - - subparts = g_hash_table_lookup (cache->parts, uid); - if (!subparts) { - subparts = g_ptr_array_new (); - g_hash_table_insert (cache->parts, g_strdup (uid), subparts); - } - - if (g_hash_table_lookup_extended (cache->parts, key, &okey, &ostream)) { - if (ostream) { - camel_object_unhook_event (ostream, "finalize", - stream_finalize, cache); - g_hash_table_remove (cache->cached, ostream); - camel_object_unref (ostream); - } - hash_key = okey; - } else { - hash_key = g_strdup (key); - g_ptr_array_add (subparts, hash_key); - } - - g_hash_table_insert (cache->parts, hash_key, stream); - g_hash_table_insert (cache->cached, stream, hash_key); - - if (stream) { - camel_object_hook_event (CAMEL_OBJECT (stream), "finalize", - stream_finalize, cache); - } -} - -/** - * camel_imap_message_cache_new: - * @path: directory to use for storage - * @summary: CamelFolderSummary for the folder we are caching - * @ex: a CamelException - * - * Return value: a new CamelImapMessageCache object using @path for - * storage. If cache files already exist in @path, then any that do not - * correspond to messages in @summary will be deleted. - **/ -CamelImapMessageCache * -camel_imap_message_cache_new (const char *path, CamelFolderSummary *summary, - CamelException *ex) -{ - CamelImapMessageCache *cache; - DIR *dir; - struct dirent *d; - char *uid, *p; - GPtrArray *deletes; - CamelMessageInfo *info; - - dir = opendir (path); - if (!dir) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - _("Could not open cache directory: %s"), - g_strerror (errno)); - return NULL; - } - - cache = (CamelImapMessageCache *)camel_object_new (CAMEL_IMAP_MESSAGE_CACHE_TYPE); - cache->path = g_strdup (path); - - cache->parts = g_hash_table_new (g_str_hash, g_str_equal); - cache->cached = g_hash_table_new (NULL, NULL); - deletes = g_ptr_array_new (); - while ((d = readdir (dir))) { - if (!isdigit (d->d_name[0])) - continue; - - p = strchr (d->d_name, '.'); - if (p) - uid = g_strndup (d->d_name, p - d->d_name); - else - uid = g_strdup (d->d_name); - - info = camel_folder_summary_uid (summary, uid); - if (info) { - camel_folder_summary_info_free (summary, info); - cache_put (cache, uid, d->d_name, NULL); - } else - g_ptr_array_add (deletes, g_strdup_printf ("%s/%s", cache->path, d->d_name)); - g_free (uid); - } - closedir (dir); - - while (deletes->len) { - unlink (deletes->pdata[0]); - g_free (deletes->pdata[0]); - g_ptr_array_remove_index_fast (deletes, 0); - } - g_ptr_array_free (deletes, TRUE); - - return cache; -} - -/** - * camel_imap_message_cache_max_uid: - * @cache: the cache - * - * Return value: the largest (real) UID in the cache. - **/ -guint32 -camel_imap_message_cache_max_uid (CamelImapMessageCache *cache) -{ - return cache->max_uid; -} - -/** - * camel_imap_message_cache_set_path: - * @cache: - * @path: - * - * Set the path used for the message cache. - **/ -void -camel_imap_message_cache_set_path (CamelImapMessageCache *cache, const char *path) -{ - g_free(cache->path); - cache->path = g_strdup(path); -} - -static void -stream_finalize (CamelObject *stream, gpointer event_data, gpointer user_data) -{ - CamelImapMessageCache *cache = user_data; - char *key; - - key = g_hash_table_lookup (cache->cached, stream); - if (!key) - return; - g_hash_table_remove (cache->cached, stream); - g_hash_table_insert (cache->parts, key, NULL); -} - - -static CamelStream * -insert_setup (CamelImapMessageCache *cache, const char *uid, const char *part_spec, - char **path, char **key, CamelException *ex) -{ - CamelStream *stream; - int fd; - - *path = g_strdup_printf ("%s/%s.%s", cache->path, uid, part_spec); - *key = strrchr (*path, '/') + 1; - stream = g_hash_table_lookup (cache->parts, *key); - if (stream) - camel_object_unref (CAMEL_OBJECT (stream)); - - fd = open (*path, O_RDWR | O_CREAT | O_TRUNC, 0600); - if (fd == -1) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - _("Failed to cache message %s: %s"), - uid, g_strerror (errno)); - g_free (*path); - return NULL; - } - - return camel_stream_fs_new_with_fd (fd); -} - -static CamelStream * -insert_abort (char *path, CamelStream *stream) -{ - unlink (path); - g_free (path); - camel_object_unref (CAMEL_OBJECT (stream)); - return NULL; -} - -static CamelStream * -insert_finish (CamelImapMessageCache *cache, const char *uid, char *path, - char *key, CamelStream *stream) -{ - camel_stream_flush (stream); - camel_stream_reset (stream); - cache_put (cache, uid, key, stream); - g_free (path); - - return stream; -} - -/** - * camel_imap_message_cache_insert: - * @cache: the cache - * @uid: UID of the message data to cache - * @part_spec: the IMAP part_spec of the data - * @data: the data - * @len: length of @data - * - * Caches the provided data into @cache. - * - * Return value: a CamelStream containing the cached data, which the - * caller must unref. - **/ -CamelStream * -camel_imap_message_cache_insert (CamelImapMessageCache *cache, const char *uid, - const char *part_spec, const char *data, - int len, CamelException *ex) -{ - char *path, *key; - CamelStream *stream; - - stream = insert_setup (cache, uid, part_spec, &path, &key, ex); - if (!stream) - return NULL; - - if (camel_stream_write (stream, data, len) == -1) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - _("Failed to cache message %s: %s"), - uid, g_strerror (errno)); - return insert_abort (path, stream); - } - - return insert_finish (cache, uid, path, key, stream); -} - -/** - * camel_imap_message_cache_insert_stream: - * @cache: the cache - * @uid: UID of the message data to cache - * @part_spec: the IMAP part_spec of the data - * @data_stream: the stream to cache - * - * Caches the provided data into @cache. - **/ -void -camel_imap_message_cache_insert_stream (CamelImapMessageCache *cache, - const char *uid, const char *part_spec, - CamelStream *data_stream, CamelException *ex) -{ - char *path, *key; - CamelStream *stream; - - stream = insert_setup (cache, uid, part_spec, &path, &key, ex); - if (!stream) - return; - - if (camel_stream_write_to_stream (data_stream, stream) == -1) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - _("Failed to cache message %s: %s"), - uid, g_strerror (errno)); - insert_abort (path, stream); - } else { - insert_finish (cache, uid, path, key, stream); - camel_object_unref (CAMEL_OBJECT (stream)); - } -} - -/** - * camel_imap_message_cache_insert_wrapper: - * @cache: the cache - * @uid: UID of the message data to cache - * @part_spec: the IMAP part_spec of the data - * @wrapper: the wrapper to cache - * - * Caches the provided data into @cache. - **/ -void -camel_imap_message_cache_insert_wrapper (CamelImapMessageCache *cache, - const char *uid, const char *part_spec, - CamelDataWrapper *wrapper, CamelException *ex) -{ - char *path, *key; - CamelStream *stream; - - stream = insert_setup (cache, uid, part_spec, &path, &key, ex); - if (!stream) - return; - - if (camel_data_wrapper_write_to_stream (wrapper, stream) == -1) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - _("Failed to cache message %s: %s"), - uid, g_strerror (errno)); - insert_abort (path, stream); - } else { - insert_finish (cache, uid, path, key, stream); - camel_object_unref (CAMEL_OBJECT (stream)); - } -} - - -/** - * camel_imap_message_cache_get: - * @cache: the cache - * @uid: the UID of the data to get - * @part_spec: the part_spec of the data to get - * @ex: exception - * - * Return value: a CamelStream containing the cached data (which the - * caller must unref), or %NULL if that data is not cached. - **/ -CamelStream * -camel_imap_message_cache_get (CamelImapMessageCache *cache, const char *uid, - const char *part_spec, CamelException *ex) -{ - CamelStream *stream; - char *path, *key; - - if (uid[0] == 0) - return NULL; - - path = g_strdup_printf ("%s/%s.%s", cache->path, uid, part_spec); - key = strrchr (path, '/') + 1; - stream = g_hash_table_lookup (cache->parts, key); - if (stream) { - camel_stream_reset (CAMEL_STREAM (stream)); - camel_object_ref (CAMEL_OBJECT (stream)); - g_free (path); - return stream; - } - - stream = camel_stream_fs_new_with_name (path, O_RDONLY, 0); - if (stream) { - cache_put (cache, uid, key, stream); - } else { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - _("Failed to cache %s: %s"), - part_spec, g_strerror (errno)); - } - - g_free (path); - - return stream; -} - -/** - * camel_imap_message_cache_remove: - * @cache: the cache - * @uid: UID of the data to remove - * - * Removes all data associated with @uid from @cache. - **/ -void -camel_imap_message_cache_remove (CamelImapMessageCache *cache, const char *uid) -{ - GPtrArray *subparts; - char *key, *path; - CamelObject *stream; - int i; - - subparts = g_hash_table_lookup (cache->parts, uid); - if (!subparts) - return; - for (i = 0; i < subparts->len; i++) { - key = subparts->pdata[i]; - path = g_strdup_printf ("%s/%s", cache->path, key); - unlink (path); - g_free (path); - stream = g_hash_table_lookup (cache->parts, key); - if (stream) { - camel_object_unhook_event (stream, "finalize", - stream_finalize, cache); - camel_object_unref (stream); - g_hash_table_remove (cache->cached, stream); - } - g_hash_table_remove (cache->parts, key); - g_free (key); - } - g_hash_table_remove (cache->parts, uid); - g_ptr_array_free (subparts, TRUE); -} - -static void -add_uids (gpointer key, gpointer value, gpointer data) -{ - if (!strchr (key, '.')) - g_ptr_array_add (data, key); -} - -/** - * camel_imap_message_cache_clear: - * @cache: the cache - * - * Removes all cached data from @cache. - **/ -void -camel_imap_message_cache_clear (CamelImapMessageCache *cache) -{ - GPtrArray *uids; - int i; - - uids = g_ptr_array_new (); - g_hash_table_foreach (cache->parts, add_uids, uids); - - for (i = 0; i < uids->len; i++) - camel_imap_message_cache_remove (cache, uids->pdata[i]); - g_ptr_array_free (uids, TRUE); -} - - -/** - * camel_imap_message_cache_copy: - * @source: the source message cache - * @source_uid: UID of a message in @source - * @dest: the destination message cache - * @dest_uid: UID of the message in @dest - * - * Copies all cached parts from @source_uid in @source to @dest_uid in - * @destination. - **/ -void -camel_imap_message_cache_copy (CamelImapMessageCache *source, - const char *source_uid, - CamelImapMessageCache *dest, - const char *dest_uid, - CamelException *ex) -{ - GPtrArray *subparts; - CamelStream *stream; - char *part; - int i; - - subparts = g_hash_table_lookup (source->parts, source_uid); - if (!subparts || !subparts->len) - return; - - for (i = 0; i < subparts->len; i++) { - part = strchr (subparts->pdata[i], '.'); - if (!part++) - continue; - - if ((stream = camel_imap_message_cache_get (source, source_uid, part, ex))) { - camel_imap_message_cache_insert_stream (dest, dest_uid, part, stream, ex); - camel_object_unref (CAMEL_OBJECT (stream)); - } - } -} |