/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*-
*
* Authors: Michael Zucchi <notzed@ximian.com>
*
* Copyright (C) 1999, 2000 Ximian Inc.
*
* 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 <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include "camel-mbox-folder.h"
#include "camel-mbox-store.h"
#include "string-utils.h"
#include "camel-stream-fs.h"
#include "camel-mbox-summary.h"
#include "camel-data-wrapper.h"
#include "camel-mime-message.h"
#include "camel-stream-filter.h"
#include "camel-mime-filter-from.h"
#include "camel-exception.h"
#define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/
static CamelLocalFolderClass *parent_class = NULL;
/* Returns the class for a CamelMboxFolder */
#define CMBOXF_CLASS(so) CAMEL_MBOX_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CMBOXS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
static int mbox_lock(CamelLocalFolder *lf, CamelLockType type, CamelException *ex);
static void mbox_unlock(CamelLocalFolder *lf);
static void mbox_set_message_user_flag(CamelFolder *folder, const char *uid, const char *name, gboolean value);
static void mbox_set_message_user_tag(CamelFolder *folder, const char *uid, const char *name, const char *value);
static void mbox_append_message(CamelFolder *folder, CamelMimeMessage * message, const CamelMessageInfo * info, CamelException *ex);
static CamelMimeMessage *mbox_get_message(CamelFolder *folder, const gchar * uid, CamelException *ex);
static CamelLocalSummary *mbox_create_summary(const char *path, const char *folder, ibex *index);
static void mbox_finalise(CamelObject * object);
static void
camel_mbox_folder_class_init(CamelMboxFolderClass * camel_mbox_folder_class)
{
CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_mbox_folder_class);
CamelLocalFolderClass *lclass = (CamelLocalFolderClass *)camel_mbox_folder_class;
parent_class = (CamelLocalFolderClass *)camel_type_get_global_classfuncs(camel_local_folder_get_type());
/* virtual method definition */
/* virtual method overload */
camel_folder_class->append_message = mbox_append_message;
camel_folder_class->get_message = mbox_get_message;
camel_folder_class->set_message_user_flag = mbox_set_message_user_flag;
camel_folder_class->set_message_user_tag = mbox_set_message_user_tag;
lclass->create_summary = mbox_create_summary;
lclass->lock = mbox_lock;
lclass->unlock = mbox_unlock;
}
static void
mbox_init(gpointer object, gpointer klass)
{
/*CamelFolder *folder = object;*/
CamelMboxFolder *mbox_folder = object;
mbox_folder->lockfd = -1;
}
static void
mbox_finalise(CamelObject * object)
{
CamelMboxFolder *mbox_folder = (CamelMboxFolder *)object;
g_assert(mbox_folder->lockfd == -1);
}
CamelType camel_mbox_folder_get_type(void)
{
static CamelType camel_mbox_folder_type = CAMEL_INVALID_TYPE;
if (camel_mbox_folder_type == CAMEL_INVALID_TYPE) {
camel_mbox_folder_type = camel_type_register(CAMEL_LOCAL_FOLDER_TYPE, "CamelMboxFolder",
sizeof(CamelMboxFolder),
sizeof(CamelMboxFolderClass),
(CamelObjectClassInitFunc) camel_mbox_folder_class_init,
NULL,
(CamelObjectInitFunc) mbox_init,
(CamelObjectFinalizeFunc) mbox_finalise);
}
return camel_mbox_folder_type;
}
CamelFolder *
camel_mbox_folder_new(CamelStore *parent_store, const char *full_name, guint32 flags, CamelException *ex)
{
CamelFolder *folder;
d(printf("Creating mbox folder: %s in %s\n", full_name, camel_local_store_get_toplevel_dir((CamelLocalStore *)parent_store)));
folder = (CamelFolder *)camel_object_new(CAMEL_MBOX_FOLDER_TYPE);
folder = (CamelFolder *)camel_local_folder_construct((CamelLocalFolder *)folder,
parent_store, full_name, flags, ex);
return folder;
}
static CamelLocalSummary *mbox_create_summary(const char *path, const char *folder, ibex *index)
{
return (CamelLocalSummary *)camel_mbox_summary_new(path, folder, index);
}
static int mbox_lock(CamelLocalFolder *lf, CamelLockType type, CamelException *ex)
{
CamelMboxFolder *mf = (CamelMboxFolder *)lf;
/* make sure we have matching unlocks for locks, camel-local-folder class should enforce this */
g_assert(mf->lockfd == -1);
mf->lockfd = open(lf->folder_path, O_RDWR, 0);
if (mf->lockfd == -1) {
camel_exception_setv(ex, 1, _("Cannot create folder lock on %s: %s"), lf->folder_path, strerror(errno));
return -1;
}
if (camel_lock_folder(lf->folder_path, mf->lockfd, type, ex) == -1) {
close(mf->lockfd);
mf->lockfd = -1;
return -1;
}
return 0;
}
static void mbox_unlock(CamelLocalFolder *lf)
{
CamelMboxFolder *mf = (CamelMboxFolder *)lf;
g_assert(mf->lockfd != -1);
camel_unlock_folder(lf->folder_path, mf->lockfd);
close(mf->lockfd);
mf->lockfd = -1;
}
static void
mbox_append_message(CamelFolder *folder, CamelMimeMessage * message, const CamelMessageInfo * info, CamelException *ex)
{
CamelLocalFolder *lf = (CamelLocalFolder *)folder;
CamelStream *output_stream = NULL, *filter_stream = NULL;
CamelMimeFilter *filter_from = NULL;
CamelMboxSummary *mbs = (CamelMboxSummary *)folder->summary;
CamelMessageInfo *mi;
char *fromline = NULL;
int fd, retval;
struct stat st;
#if 0
char *xev;
#endif
/* If we can't lock, dont do anything */
if (camel_local_folder_lock(lf, CAMEL_LOCK_WRITE, ex) == -1)
return;
d(printf("Appending message\n"));
/* first, check the summary is correct (updates folder_size too) */
retval = camel_local_summary_check ((CamelLocalSummary *)folder->summary, lf->changes, ex);
if (retval == -1)
goto fail;
/* add it to the summary/assign the uid, etc */
mi = camel_local_summary_add((CamelLocalSummary *)folder->summary, message, info, lf->changes, ex);
if (mi == NULL)
goto fail;
d(printf("Appending message: uid is %s\n", camel_message_info_uid(mi)));
output_stream = camel_stream_fs_new_with_name(lf->folder_path, O_WRONLY|O_APPEND, 0600);
if (output_stream == NULL) {
camel_exception_setv(ex, 1, _("Cannot open mailbox: %s: %s\n"), lf->folder_path, strerror(errno));
goto fail;
}
/* and we need to set the frompos/XEV explicitly */
((CamelMboxMessageInfo *)mi)->frompos = mbs->folder_size?mbs->folder_size+1:0;
#if 0
xev = camel_local_summary_encode_x_evolution((CamelLocalSummary *)folder->summary, mi);
if (xev) {
/* the x-ev header should match the 'current' flags, no problem, so store as much */
camel_medium_set_header((CamelMedium *)message, "X-Evolution", xev);
mi->flags &= ~ CAMEL_MESSAGE_FOLDER_NOXEV|CAMEL_MESSAGE_FOLDER_FLAGGED;
g_free(xev);
}
#endif
/* we must write this to the non-filtered stream ... prepend a \n if not at the start of the file */
fromline = camel_mbox_summary_build_from(((CamelMimePart *)message)->headers);
if (camel_stream_printf(output_stream, mbs->folder_size==0?"%s":"\n%s", fromline) == -1)
goto fail_write;
/* and write the content to the filtering stream, that translated '\nFrom' into '\n>From' */
filter_stream = (CamelStream *) camel_stream_filter_new_with_stream(output_stream);
filter_from = (CamelMimeFilter *) camel_mime_filter_from_new();
camel_stream_filter_add((CamelStreamFilter *) filter_stream, filter_from);
if (camel_data_wrapper_write_to_stream((CamelDataWrapper *)message, filter_stream) == -1)
goto fail_write;
if (camel_stream_close(filter_stream) == -1)
goto fail_write;
/* unlock as soon as we can */
camel_local_folder_unlock(lf);
/* filter stream ref's the output stream itself, so we need to unref it too */
camel_object_unref((CamelObject *)filter_from);
camel_object_unref((CamelObject *)filter_stream);
camel_object_unref((CamelObject *)output_stream);
g_free(fromline);
/* now we 'fudge' the summary to tell it its uptodate, because its idea of uptodate has just changed */
/* the stat really shouldn't fail, we just wrote to it */
if (stat(lf->folder_path, &st) == 0) {
mbs->folder_size = st.st_size;
((CamelFolderSummary *)mbs)->time = st.st_mtime;
}
if (camel_folder_change_info_changed(lf->changes)) {
camel_object_trigger_event((CamelObject *)folder, "folder_changed", lf->changes);
camel_folder_change_info_clear(lf->changes);
}
return;
fail_write:
if (errno == EINTR)
camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
_("Mail append cancelled"));
else
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Cannot append message to mbox file: %s: %s"),
lf->folder_path, g_strerror (errno));
if (filter_stream)
camel_object_unref(CAMEL_OBJECT(filter_stream));
if (output_stream)
camel_object_unref(CAMEL_OBJECT(output_stream));
if (filter_from)
camel_object_unref(CAMEL_OBJECT(filter_from));
g_free(fromline);
/* reset the file to original size */
fd = open(lf->folder_path, O_WRONLY, 0600);
if (fd != -1) {
ftruncate(fd, mbs->folder_size);
close(fd);
}
/* remove the summary info so we are not out-of-sync with the mbox */
camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (mbs), camel_message_info_uid (mi));
/* and tell the summary its uptodate */
if (stat(lf->folder_path, &st) == 0) {
mbs->folder_size = st.st_size;
((CamelFolderSummary *)mbs)->time = st.st_mtime;
}
fail:
/* make sure we unlock the folder - before we start triggering events into appland */
camel_local_folder_unlock(lf);
/* cascade the changes through, anyway, if there are any outstanding */
if (camel_folder_change_info_changed(lf->changes)) {
camel_object_trigger_event((CamelObject *)folder, "folder_changed", lf->changes);
camel_folder_change_info_clear(lf->changes);
}
}
static CamelMimeMessage *
mbox_get_message(CamelFolder *folder, const gchar * uid, CamelException *ex)
{
CamelLocalFolder *lf = (CamelLocalFolder *)folder;
CamelMimeMessage *message;
CamelMboxMessageInfo *info;
CamelMimeParser *parser;
int fd, retval;
int retried = FALSE;
d(printf("Getting message %s\n", uid));
/* lock the folder first, burn if we can't */
if (camel_local_folder_lock(lf, CAMEL_LOCK_READ, ex) == -1)
return NULL;
retry:
/* get the message summary info */
info = (CamelMboxMessageInfo *) camel_folder_summary_uid(folder->summary, uid);
if (info == NULL) {
camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
_("Cannot get message: %s\n %s"), uid, _("No such message"));
camel_local_folder_unlock(lf);
return NULL;
}
/* no frompos, its an error in the library (and we can't do anything with it */
g_assert(info->frompos != -1);
/* we use an fd instead of a normal stream here - the reason is subtle, camel_mime_part will cache
the whole message in memory if the stream is non-seekable (which it is when built from a parser
with no stream). This means we dont have to lock the mbox for the life of the message, but only
while it is being created. */
fd = open(lf->folder_path, O_RDONLY);
if (fd == -1) {
camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
_("Cannot get message: %s from folder %s\n %s"), uid, lf->folder_path,
strerror(errno));
camel_local_folder_unlock(lf);
camel_folder_summary_info_free(folder->summary, (CamelMessageInfo *)info);
return NULL;
}
/* we use a parser to verify the message is correct, and in the correct position */
parser = camel_mime_parser_new();
camel_mime_parser_init_with_fd(parser, fd);
camel_mime_parser_scan_from(parser, TRUE);
camel_mime_parser_seek(parser, info->frompos, SEEK_SET);
if (camel_mime_parser_step(parser, NULL, NULL) != HSCAN_FROM
|| camel_mime_parser_tell_start_from(parser) != info->frompos) {
g_warning("Summary doesn't match the folder contents! eek!\n"
" expecting offset %ld got %ld, state = %d", (long int)info->frompos,
(long int)camel_mime_parser_tell_start_from(parser),
camel_mime_parser_state(parser));
camel_object_unref((CamelObject *)parser);
camel_folder_summary_info_free(folder->summary, (CamelMessageInfo *)info);
if (!retried) {
retried = TRUE;
retval = camel_local_summary_check ((CamelLocalSummary *)folder->summary, lf->changes, ex);
if (retval != -1)
goto retry;
}
camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
_("Cannot get message: %s from folder %s\n %s"), uid, lf->folder_path,
_("The folder appears to be irrecoverably corrupted."));
camel_local_folder_unlock(lf);
return NULL;
}
camel_folder_summary_info_free(folder->summary, (CamelMessageInfo *)info);
message = camel_mime_message_new();
if (camel_mime_part_construct_from_parser((CamelMimePart *)message, parser) == -1) {
g_warning("Construction failed");
camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
_("Cannot get message: %s from folder %s\n %s"), uid, lf->folder_path,
_("Message construction failed: Corrupt mailbox?"));
camel_object_unref((CamelObject *)parser);
camel_object_unref((CamelObject *)message);
camel_local_folder_unlock(lf);
return NULL;
}
/* and unlock now we're finished with it */
camel_local_folder_unlock(lf);
camel_object_unref((CamelObject *)parser);
/* use the opportunity to notify of changes (particularly if we had a rebuild) */
if (camel_folder_change_info_changed(lf->changes)) {
camel_object_trigger_event((CamelObject *)folder, "folder_changed", lf->changes);
camel_folder_change_info_clear(lf->changes);
}
return message;
}
static void
mbox_set_message_user_flag(CamelFolder *folder, const char *uid, const char *name, gboolean value)
{
CamelMessageInfo *info;
g_return_if_fail(folder->summary != NULL);
info = camel_folder_summary_uid(folder->summary, uid);
g_return_if_fail(info != NULL);
if (camel_flag_set(&info->user_flags, name, value)) {
info->flags |= CAMEL_MESSAGE_FOLDER_FLAGGED|CAMEL_MESSAGE_FOLDER_XEVCHANGE;
camel_folder_summary_touch(folder->summary);
camel_object_trigger_event(CAMEL_OBJECT(folder), "message_changed", (char *) uid);
}
camel_folder_summary_info_free(folder->summary, info);
}
static void
mbox_set_message_user_tag(CamelFolder *folder, const char *uid, const char *name, const char *value)
{
CamelMessageInfo *info;
g_return_if_fail(folder->summary != NULL);
info = camel_folder_summary_uid(folder->summary, uid);
g_return_if_fail(info != NULL);
if (camel_tag_set(&info->user_tags, name, value)) {
info->flags |= CAMEL_MESSAGE_FOLDER_FLAGGED|CAMEL_MESSAGE_FOLDER_XEVCHANGE;
camel_folder_summary_touch(folder->summary);
camel_object_trigger_event(CAMEL_OBJECT(folder), "message_changed", (char *) uid);
}
camel_folder_summary_info_free(folder->summary, info);
}
