/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2000 Ximian, Inc.
*
* Authors: Michael Zucchi <notzed@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 <sys/stat.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <dirent.h>
#include "camel-maildir-store.h"
#include "camel-maildir-folder.h"
#include "camel-exception.h"
#include "camel-url.h"
#include "camel-private.h"
#define d(x)
static CamelLocalStoreClass *parent_class = NULL;
/* Returns the class for a CamelMaildirStore */
#define CMAILDIRS_CLASS(so) CAMEL_MAILDIR_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CMAILDIRF_CLASS(so) CAMEL_MAILDIR_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guint32 flags, CamelException * ex);
static CamelFolder *get_inbox (CamelStore *store, CamelException *ex);
static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex);
static CamelFolderInfo * get_folder_info (CamelStore *store, const char *top, guint32 flags, CamelException *ex);
static void camel_maildir_store_class_init(CamelObjectClass * camel_maildir_store_class)
{
CamelStoreClass *camel_store_class = CAMEL_STORE_CLASS(camel_maildir_store_class);
/*CamelServiceClass *camel_service_class = CAMEL_SERVICE_CLASS(camel_maildir_store_class);*/
parent_class = (CamelLocalStoreClass *)camel_type_get_global_classfuncs(camel_local_store_get_type());
/* virtual method overload, use defaults for most */
camel_store_class->get_folder = get_folder;
camel_store_class->get_inbox = get_inbox;
camel_store_class->delete_folder = delete_folder;
camel_store_class->get_folder_info = get_folder_info;
camel_store_class->free_folder_info = camel_store_free_folder_info_full;
}
CamelType camel_maildir_store_get_type(void)
{
static CamelType camel_maildir_store_type = CAMEL_INVALID_TYPE;
if (camel_maildir_store_type == CAMEL_INVALID_TYPE) {
camel_maildir_store_type = camel_type_register(CAMEL_LOCAL_STORE_TYPE, "CamelMaildirStore",
sizeof(CamelMaildirStore),
sizeof(CamelMaildirStoreClass),
(CamelObjectClassInitFunc) camel_maildir_store_class_init,
NULL,
NULL,
NULL);
}
return camel_maildir_store_type;
}
static CamelFolder *
get_folder(CamelStore * store, const char *folder_name, guint32 flags, CamelException * ex)
{
char *name, *tmp, *cur, *new;
struct stat st;
CamelFolder *folder = NULL;
if (!((CamelStoreClass *)parent_class)->get_folder(store, folder_name, flags, ex))
return NULL;
name = g_strdup_printf("%s%s", CAMEL_LOCAL_STORE(store)->toplevel_dir, folder_name);
tmp = g_strdup_printf("%s/tmp", name);
cur = g_strdup_printf("%s/cur", name);
new = g_strdup_printf("%s/new", name);
if (stat(name, &st) == -1) {
if (errno != ENOENT) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not open folder `%s':\n%s"),
folder_name, g_strerror (errno));
} else if ((flags & CAMEL_STORE_FOLDER_CREATE) == 0) {
camel_exception_setv (ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
_("Folder `%s' does not exist."), folder_name);
} else {
if (mkdir(name, 0700) != 0
|| mkdir(tmp, 0700) != 0
|| mkdir(cur, 0700) != 0
|| mkdir(new, 0700) != 0) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not create folder `%s':\n%s"),
folder_name, g_strerror (errno));
rmdir(tmp);
rmdir(cur);
rmdir(new);
rmdir(name);
} else {
folder = camel_maildir_folder_new(store, folder_name, flags, ex);
}
}
} else if (!S_ISDIR(st.st_mode)
|| stat(tmp, &st) != 0 || !S_ISDIR(st.st_mode)
|| stat(cur, &st) != 0 || !S_ISDIR(st.st_mode)
|| stat(new, &st) != 0 || !S_ISDIR(st.st_mode)) {
camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
_("`%s' is not a maildir directory."), name);
} else {
folder = camel_maildir_folder_new(store, folder_name, flags, ex);
}
g_free(name);
g_free(tmp);
g_free(cur);
g_free(new);
return folder;
}
static CamelFolder *
get_inbox (CamelStore *store, CamelException *ex)
{
return get_folder (store, ".", 0, ex);
}
static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex)
{
char *name, *tmp, *cur, *new;
struct stat st;
name = g_strdup_printf("%s%s", CAMEL_LOCAL_STORE(store)->toplevel_dir, folder_name);
tmp = g_strdup_printf("%s/tmp", name);
cur = g_strdup_printf("%s/cur", name);
new = g_strdup_printf("%s/new", name);
if (stat(name, &st) == -1 || !S_ISDIR(st.st_mode)
|| stat(tmp, &st) == -1 || !S_ISDIR(st.st_mode)
|| stat(cur, &st) == -1 || !S_ISDIR(st.st_mode)
|| stat(new, &st) == -1 || !S_ISDIR(st.st_mode)) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not delete folder `%s': %s"),
folder_name, errno ? g_strerror (errno) :
_("not a maildir directory"));
} else {
int err = 0;
/* remove subdirs first - will fail if not empty */
if (rmdir(cur) == -1 || rmdir(new) == -1) {
err = errno;
} else {
DIR *dir;
struct dirent *d;
/* for tmp (only), its contents is irrelevant */
dir = opendir(tmp);
if (dir) {
while ( (d=readdir(dir)) ) {
char *name = d->d_name, *file;
if (!strcmp(name, ".") || !strcmp(name, ".."))
continue;
file = g_strdup_printf("%s/%s", tmp, name);
unlink(file);
g_free(file);
}
closedir(dir);
}
if (rmdir(tmp) == -1 || rmdir(name) == -1)
err = errno;
}
if (err != 0) {
/* easier just to mkdir all (and let them fail), than remember what we got to */
mkdir(name, 0700);
mkdir(cur, 0700);
mkdir(new, 0700);
mkdir(tmp, 0700);
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not delete folder `%s': %s"),
folder_name, g_strerror (err));
} else {
/* and remove metadata */
((CamelStoreClass *)parent_class)->delete_folder(store, folder_name, ex);
}
}
g_free(name);
g_free(tmp);
g_free(cur);
g_free(new);
}
static CamelFolderInfo *camel_folder_info_new(const char *url, const char *full, const char *name, int unread)
{
CamelFolderInfo *fi;
fi = g_malloc0(sizeof(*fi));
fi->url = g_strdup(url);
fi->full_name = g_strdup(full);
fi->name = g_strdup(name);
fi->unread_message_count = unread;
camel_folder_info_build_path(fi, '/');
d(printf("Adding maildir info: '%s' '%s' '%s' '%s'\n", fi->path, fi->name, fi->full_name, fi->url));
return fi;
}
/* used to find out where we've visited already */
struct _inode {
dev_t dnode;
ino_t inode;
};
/* returns number of records found at or below this level */
static int scan_dir(CamelStore *store, GHashTable *visited, char *root, const char *path, guint32 flags, CamelFolderInfo *parent, CamelFolderInfo **fip, CamelException *ex)
{
DIR *dir;
struct dirent *d;
char *name, *uri, *tmp, *cur, *new;
const char *base;
CamelFolderInfo *fi = NULL;
struct stat st;
CamelFolder *folder;
int unread;
/* look for folders matching the right structure, recursively */
name = g_strdup_printf("%s/%s", root, path);
d(printf("checking dir '%s' part '%s' for maildir content\n", root, path));
tmp = g_strdup_printf("%s/tmp", name);
cur = g_strdup_printf("%s/cur", name);
new = g_strdup_printf("%s/new", name);
if (stat(tmp, &st) == 0 && S_ISDIR(st.st_mode)
&& stat(cur, &st) == 0 && S_ISDIR(st.st_mode)
&& stat(new, &st) == 0 && S_ISDIR(st.st_mode)) {
uri = g_strdup_printf("maildir:%s#%s", root, path);
} else
uri = g_strdup_printf("maildir:%s;noselect=yes#%s", root, path);
base = strrchr(path, '/');
if (base)
base++;
else
base = path;
/* if we have this folder open, get the real unread count */
unread = -1;
CAMEL_STORE_LOCK(store, cache_lock);
folder = g_hash_table_lookup(store->folders, path);
if (folder) {
if ((flags & CAMEL_STORE_FOLDER_INFO_FAST) == 0)
camel_folder_refresh_info(folder, NULL);
unread = camel_folder_get_unread_message_count(folder);
}
CAMEL_STORE_UNLOCK(store, cache_lock);
/* if we dont have a folder, then scan the directory and get the unread
count from there, which is reasonably cheap (on decent filesystem) */
/* Well we could get this from the summary, but this is more accurate */
if (folder == NULL
&& (flags & CAMEL_STORE_FOLDER_INFO_FAST) == 0) {
unread = 0;
dir = opendir(new);
if (dir) {
/* we assume that all files here are unread ones */
while ( (d = readdir(dir)) ) {
if (d->d_name[0] != '.')
unread++;
}
closedir(dir);
}
dir = opendir(cur);
if (dir) {
/* any files with flags but not the 'S' (seen) flag are unread */
while ( (d = readdir(dir)) ) {
char *p = strstr(d->d_name, ":2,");
if (p && strchr(p, 'S') == NULL)
unread++;
}
closedir(dir);
}
}
fi = camel_folder_info_new(uri, path, base, unread);
d(printf("found! uri = %s\n", fi->url));
d(printf(" full_name = %s\n name = '%s'\n", fi->full_name, fi->name));
fi->parent = parent;
fi->sibling = *fip;
*fip = fi;
g_free(uri);
g_free(tmp);
g_free(cur);
g_free(new);
unread = 0;
/* always look further if asked */
if (((flags & CAMEL_STORE_FOLDER_INFO_RECURSIVE) || parent == NULL)) {
dir = opendir(name);
if (dir == NULL) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not scan folder `%s': %s"),
root, g_strerror (errno));
g_free(name);
return -1;
}
while ( (d = readdir(dir)) ) {
if (strcmp(d->d_name, "tmp") == 0
|| strcmp(d->d_name, "cur") == 0
|| strcmp(d->d_name, "new") == 0
|| strcmp(d->d_name, ".") == 0
|| strcmp(d->d_name, "..") == 0)
continue;
tmp = g_strdup_printf("%s/%s", name, d->d_name);
if (stat(tmp, &st) == 0 && S_ISDIR(st.st_mode)) {
struct _inode in = { st.st_dev, st.st_ino };
/* see if we've visited already */
if (g_hash_table_lookup(visited, &in) == NULL) {
struct _inode *inew = g_malloc(sizeof(*inew));
*inew = in;
g_hash_table_insert(visited, inew, inew);
new = g_strdup_printf("%s/%s", path, d->d_name);
if (scan_dir(store, visited, root, new, flags, fi, &fi->child, ex) == -1) {
g_free(tmp);
g_free(new);
closedir(dir);
return -1;
}
g_free(new);
}
}
g_free(tmp);
}
closedir(dir);
}
g_free(name);
return 0;
}
static guint inode_hash(const void *d)
{
const struct _inode *v = d;
return v->inode ^ v->dnode;
}
static gboolean inode_equal(const void *a, const void *b)
{
const struct _inode *v1 = a, *v2 = b;
return v1->inode == v2->inode && v1->dnode == v2->dnode;
}
static void inode_free(void *k, void *v, void *d)
{
g_free(k);
}
static CamelFolderInfo *
get_folder_info (CamelStore *store, const char *top, guint32 flags, CamelException *ex)
{
CamelFolderInfo *fi = NULL;
CamelLocalStore *local_store = (CamelLocalStore *)store;
GHashTable *visited;
visited = g_hash_table_new(inode_hash, inode_equal);
if (scan_dir(store, visited, ((CamelService *)local_store)->url->path, top?top:".", flags, NULL, &fi, ex) == -1 && fi != NULL) {
camel_store_free_folder_info_full(store, fi);
fi = NULL;
}
g_hash_table_foreach(visited, inode_free, NULL);
g_hash_table_destroy(visited);
return fi;
}
