/*
* Copyright (C) 2000 Helix Code Inc.
*
* Authors: Not Zed <notzed@lostzed.mmc.com.au>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "camel-mh-summary.h"
#include <camel/camel-mime-message.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <ctype.h>
#define d(x) (printf("%s(%d): ", __FILE__, __LINE__),(x))
#define CAMEL_MH_SUMMARY_VERSION (0x2000)
static CamelMessageInfo *message_info_new(CamelFolderSummary *, struct _header_raw *);
static int mh_summary_check(CamelLocalSummary *cls, CamelFolderChangeInfo *changeinfo, CamelException *ex);
static int mh_summary_sync(CamelLocalSummary *cls, gboolean expunge, CamelFolderChangeInfo *changeinfo, CamelException *ex);
/*static int mh_summary_add(CamelLocalSummary *cls, CamelMimeMessage *msg, CamelMessageInfo *info, CamelFolderChangeInfo *, CamelException *ex);*/
static char *mh_summary_next_uid_string(CamelFolderSummary *s);
static void camel_mh_summary_class_init (CamelMhSummaryClass *class);
static void camel_mh_summary_init (CamelMhSummary *gspaper);
static void camel_mh_summary_finalise (CamelObject *obj);
#define _PRIVATE(x) (((CamelMhSummary *)(x))->priv)
struct _CamelMhSummaryPrivate {
char *current_uid;
};
static CamelLocalSummaryClass *parent_class;
CamelType
camel_mh_summary_get_type (void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register(camel_local_summary_get_type (), "CamelMhSummary",
sizeof(CamelMhSummary),
sizeof(CamelMhSummaryClass),
(CamelObjectClassInitFunc)camel_mh_summary_class_init,
NULL,
(CamelObjectInitFunc)camel_mh_summary_init,
(CamelObjectFinalizeFunc)camel_mh_summary_finalise);
}
return type;
}
static void
camel_mh_summary_class_init (CamelMhSummaryClass *class)
{
CamelFolderSummaryClass *sklass = (CamelFolderSummaryClass *) class;
CamelLocalSummaryClass *lklass = (CamelLocalSummaryClass *)class;
parent_class = (CamelLocalSummaryClass *)camel_type_get_global_classfuncs(camel_local_summary_get_type ());
/* override methods */
sklass->message_info_new = message_info_new;
sklass->next_uid_string = mh_summary_next_uid_string;
lklass->check = mh_summary_check;
lklass->sync = mh_summary_sync;
/*lklass->add = mh_summary_add;*/
}
static void
camel_mh_summary_init (CamelMhSummary *o)
{
struct _CamelFolderSummary *s = (CamelFolderSummary *) o;
o->priv = g_malloc0(sizeof(*o->priv));
/* set unique file version */
s->version += CAMEL_MH_SUMMARY_VERSION;
}
static void
camel_mh_summary_finalise(CamelObject *obj)
{
CamelMhSummary *o = (CamelMhSummary *)obj;
g_free(o->priv);
}
/**
* camel_mh_summary_new:
*
* Create a new CamelMhSummary object.
*
* Return value: A new #CamelMhSummary object.
**/
CamelMhSummary *camel_mh_summary_new (const char *filename, const char *mhdir, ibex *index)
{
CamelMhSummary *o = (CamelMhSummary *)camel_object_new(camel_mh_summary_get_type ());
camel_local_summary_construct((CamelLocalSummary *)o, filename, mhdir, index);
return o;
}
static CamelMessageInfo *message_info_new(CamelFolderSummary * s, struct _header_raw *h)
{
CamelMessageInfo *mi;
/*CamelMhSummary *mhs = (CamelMhSummary *)s;*/
mi = ((CamelFolderSummaryClass *) parent_class)->message_info_new(s, h);
/* hmm, this isn't quite right */
if (mi) {
/*mi->uid = mh_summary_next_uid_string(s);*/
}
return mi;
}
static char *mh_summary_next_uid_string(CamelFolderSummary *s)
{
CamelMhSummary *mhs = (CamelMhSummary *)s;
CamelLocalSummary *cls = (CamelLocalSummary *)s;
int fd = -1;
guint32 uid;
char *name = NULL;
/* if we are working to add an existing file, then use current_uid */
if (mhs->priv->current_uid)
return g_strdup(mhs->priv->current_uid);
/* else scan for one - and create it too, to make sure */
do {
g_free(name);
close(fd);
uid = camel_folder_summary_next_uid(s);
name = g_strdup_printf("%s/%u", cls->folder_path, uid);
/* O_EXCL isn't guaranteed, sigh. Oh well, bad luck, mh has problems anyway */
fd = open(name, O_WRONLY|O_CREAT|O_EXCL, 0600);
} while (fd == -1 && errno == EEXIST);
close(fd);
return g_strdup_printf("%u", uid);
}
static int camel_mh_summary_add(CamelLocalSummary *cls, const char *name, int forceindex)
{
CamelMhSummary *mhs = (CamelMhSummary *)cls;
char *filename = g_strdup_printf("%s/%s", cls->folder_path, name);
int fd;
CamelMimeParser *mp;
d(printf("summarising: %s\n", name));
fd = open(filename, O_RDONLY);
if (fd == -1) {
g_warning("Cannot summarise/index: %s: %s", filename, strerror(errno));
g_free(filename);
return -1;
}
mp = camel_mime_parser_new();
camel_mime_parser_scan_from(mp, FALSE);
camel_mime_parser_init_with_fd(mp, fd);
if (cls->index && (forceindex || !ibex_contains_name(cls->index, (char *)name))) {
d(printf("forcing indexing of message content\n"));
camel_folder_summary_set_index((CamelFolderSummary *)mhs, cls->index);
} else {
camel_folder_summary_set_index((CamelFolderSummary *)mhs, NULL);
}
mhs->priv->current_uid = (char *)name;
camel_folder_summary_add_from_parser((CamelFolderSummary *)mhs, mp);
camel_object_unref((CamelObject *)mp);
mhs->priv->current_uid = NULL;
camel_folder_summary_set_index((CamelFolderSummary *)mhs, NULL);
g_free(filename);
return 0;
}
static void
remove_summary(char *key, CamelMessageInfo *info, CamelLocalSummary *cls)
{
d(printf("removing message %s from summary\n", key));
if (cls->index)
ibex_unindex(cls->index, info->uid);
camel_folder_summary_remove((CamelFolderSummary *)cls, info);
}
static int
mh_summary_check(CamelLocalSummary *cls, CamelFolderChangeInfo *changeinfo, CamelException *ex)
{
DIR *dir;
struct dirent *d;
char *p, c;
CamelMessageInfo *info;
GHashTable *left;
int i, count;
int forceindex;
/* FIXME: Handle changeinfo */
d(printf("checking summary ...\n"));
/* scan the directory, check for mail files not in the index, or index entries that
no longer exist */
dir = opendir(cls->folder_path);
if (dir == NULL) {
camel_exception_setv(ex, 1, "Cannot open MH directory path: %s: %s", cls->folder_path, strerror(errno));
return -1;
}
/* keeps track of all uid's that have not been processed */
left = g_hash_table_new(g_str_hash, g_str_equal);
count = camel_folder_summary_count((CamelFolderSummary *)cls);
forceindex = count == 0;
for (i=0;i<count;i++) {
info = camel_folder_summary_index((CamelFolderSummary *)cls, i);
if (info) {
g_hash_table_insert(left, info->uid, info);
}
}
while ( (d = readdir(dir)) ) {
/* FIXME: also run stat to check for regular file */
p = d->d_name;
while ( (c = *p++) ) {
if (!isdigit(c))
break;
}
if (c==0) {
info = camel_folder_summary_uid((CamelFolderSummary *)cls, d->d_name);
if (info == NULL || (cls->index && (!ibex_contains_name(cls->index, d->d_name)))) {
/* need to add this file to the summary */
if (info != NULL) {
g_hash_table_remove(left, info->uid);
camel_folder_summary_remove((CamelFolderSummary *)cls, info);
}
camel_mh_summary_add(cls, d->d_name, forceindex);
} else {
g_hash_table_remove(left, info->uid);
}
}
}
closedir(dir);
g_hash_table_foreach(left, (GHFunc)remove_summary, cls);
g_hash_table_destroy(left);
/* FIXME: move this up a class */
/* force a save of the index, just to make sure */
/* note this could be expensive so possibly shouldn't be here
as such */
if (cls->index) {
ibex_save(cls->index);
}
return 0;
}
/* sync the summary with the ondisk files.
It doesnt store the state in the file, the summary only, == MUCH faster */
static int
mh_summary_sync(CamelLocalSummary *cls, gboolean expunge, CamelFolderChangeInfo *changes, CamelException *ex)
{
int count, i;
CamelMessageInfo *info;
char *name;
d(printf("summary_sync(expunge=%s)\n", expunge?"true":"false"));
if (cls->index) {
ibex_save(cls->index);
}
if (!expunge)
return 0;
count = camel_folder_summary_count((CamelFolderSummary *)cls);
for (i=count-1;i>=0;i--) {
info = camel_folder_summary_index((CamelFolderSummary *)cls, i);
if (info && info->flags & CAMEL_MESSAGE_DELETED) {
name = g_strdup_printf("%s/%s", cls->folder_path, info->uid);
d(printf("deleting %s\n", name));
if (unlink(name) == 0 || errno==ENOENT) {
/* FIXME: put this in folder_summary::remove()? */
if (cls->index)
ibex_unindex(cls->index, info->uid);
camel_folder_change_info_remove_uid(changes, info->uid);
camel_folder_summary_remove((CamelFolderSummary *)cls, info);
}
}
}
return 0;
}
