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claws-mail/src/mbox.c
Christoph Hohmann c568788801 0.8.9claws45 
* src/mbox.c
        freeze folder updates while importing mbox files
        (closes bug 43 importing mbox took hours)

Patch submitted by Johannes Jordan <fopref@lanrules.de>
2003-02-06 22:42:47 +00:00

427 lines
8.9 KiB
C
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/*
* Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
* Copyright (C) 1999-2001 Hiroyuki Yamamoto
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "defs.h"
#include <glib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/file.h>
#include <ctype.h>
#include <time.h>
#include "intl.h"
#include "mbox.h"
#include "procmsg.h"
#include "folder.h"
#include "prefs_common.h"
#include "prefs_account.h"
#include "account.h"
#include "utils.h"
#include "filtering.h"
#define MSGBUFSIZE 8192
#define FPUTS_TO_TMP_ABORT_IF_FAIL(s) \
{ \
if (fputs(s, tmp_fp) == EOF) { \
g_warning("can't write to temporary file\n"); \
fclose(tmp_fp); \
fclose(mbox_fp); \
unlink(tmp_file); \
g_free(tmp_file); \
return -1; \
} \
}
gint proc_mbox(FolderItem *dest, const gchar *mbox)
{
FILE *mbox_fp;
gchar buf[MSGBUFSIZE], from_line[MSGBUFSIZE];
gchar *tmp_file;
gint msgs = 0;
g_return_val_if_fail(dest != NULL, -1);
g_return_val_if_fail(mbox != NULL, -1);
debug_print("Getting messages from %s into %s...\n", mbox, dest->path);
if ((mbox_fp = fopen(mbox, "rb")) == NULL) {
FILE_OP_ERROR(mbox, "fopen");
return -1;
}
/* ignore empty lines on the head */
do {
if (fgets(buf, sizeof(buf), mbox_fp) == NULL) {
g_warning("can't read mbox file.\n");
fclose(mbox_fp);
return -1;
}
} while (buf[0] == '\n' || buf[0] == '\r');
if (strncmp(buf, "From ", 5) != 0) {
g_warning("invalid mbox format: %s\n", mbox);
fclose(mbox_fp);
return -1;
}
strcpy(from_line, buf);
if (fgets(buf, sizeof(buf), mbox_fp) == NULL) {
g_warning("malformed mbox: %s\n", mbox);
fclose(mbox_fp);
return -1;
}
tmp_file = get_tmp_file();
folder_item_update_freeze();
do {
FILE *tmp_fp;
FolderItem *dropfolder;
gint empty_line;
gboolean is_next_msg = FALSE;
gint msgnum;
if ((tmp_fp = fopen(tmp_file, "wb")) == NULL) {
FILE_OP_ERROR(tmp_file, "fopen");
g_warning("can't open temporary file\n");
fclose(mbox_fp);
g_free(tmp_file);
return -1;
}
if (change_file_mode_rw(tmp_fp, tmp_file) < 0)
FILE_OP_ERROR(tmp_file, "chmod");
/* convert unix From into Return-Path */
/*
startp = from_line + 5;
endp = strchr(startp, ' ');
if (endp == NULL)
rpath = g_strdup(startp);
else
rpath = g_strndup(startp, endp - startp);
g_strstrip(rpath);
g_snprintf(from_line, sizeof(from_line),
"Return-Path: %s\n", rpath);
g_free(rpath);
*/
FPUTS_TO_TMP_ABORT_IF_FAIL(from_line);
FPUTS_TO_TMP_ABORT_IF_FAIL(buf);
from_line[0] = '\0';
empty_line = 0;
while (fgets(buf, sizeof(buf), mbox_fp) != NULL) {
if (buf[0] == '\n' || buf[0] == '\r') {
empty_line++;
buf[0] = '\0';
continue;
}
/* From separator */
while (!strncmp(buf, "From ", 5)) {
strcpy(from_line, buf);
if (fgets(buf, sizeof(buf), mbox_fp) == NULL) {
buf[0] = '\0';
break;
}
if (is_header_line(buf)) {
is_next_msg = TRUE;
break;
} else if (!strncmp(buf, "From ", 5)) {
continue;
} else if (!strncmp(buf, ">From ", 6)) {
g_memmove(buf, buf + 1, strlen(buf));
is_next_msg = TRUE;
break;
} else {
g_warning("unescaped From found:\n%s",
from_line);
break;
}
}
if (is_next_msg) break;
if (empty_line > 0) {
while (empty_line--)
FPUTS_TO_TMP_ABORT_IF_FAIL("\n");
empty_line = 0;
}
if (from_line[0] != '\0') {
FPUTS_TO_TMP_ABORT_IF_FAIL(from_line);
from_line[0] = '\0';
}
if (buf[0] != '\0') {
if (!strncmp(buf, ">From ", 6)) {
FPUTS_TO_TMP_ABORT_IF_FAIL(buf + 1);
} else
FPUTS_TO_TMP_ABORT_IF_FAIL(buf);
buf[0] = '\0';
}
}
if (empty_line > 0) {
while (--empty_line)
FPUTS_TO_TMP_ABORT_IF_FAIL("\n");
}
if (fclose(tmp_fp) == EOF) {
FILE_OP_ERROR(tmp_file, "fclose");
g_warning("can't write to temporary file\n");
fclose(mbox_fp);
unlink(tmp_file);
g_free(tmp_file);
return -1;
}
dropfolder = folder_get_default_processing();
if ((msgnum = folder_item_add_msg(dropfolder, tmp_file, TRUE)) < 0) {
fclose(mbox_fp);
unlink(tmp_file);
g_free(tmp_file);
return -1;
}
filter_message(global_processing, dest,
msgnum);
msgs++;
} while (from_line[0] != '\0');
folder_item_update_thaw();
g_free(tmp_file);
fclose(mbox_fp);
debug_print("%d messages found.\n", msgs);
return msgs;
}
gint lock_mbox(const gchar *base, LockType type)
{
gint retval = 0;
if (type == LOCK_FILE) {
gchar *lockfile, *locklink;
gint retry = 0;
FILE *lockfp;
lockfile = g_strdup_printf("%s.%d", base, getpid());
if ((lockfp = fopen(lockfile, "wb")) == NULL) {
FILE_OP_ERROR(lockfile, "fopen");
g_warning("can't create lock file %s\n", lockfile);
g_warning("use 'flock' instead of 'file' if possible.\n");
g_free(lockfile);
return -1;
}
fprintf(lockfp, "%d\n", getpid());
fclose(lockfp);
locklink = g_strconcat(base, ".lock", NULL);
while (link(lockfile, locklink) < 0) {
FILE_OP_ERROR(lockfile, "link");
if (retry >= 5) {
g_warning("can't create %s\n", lockfile);
unlink(lockfile);
g_free(lockfile);
return -1;
}
if (retry == 0)
g_warning("mailbox is owned by another"
" process, waiting...\n");
retry++;
sleep(5);
}
unlink(lockfile);
g_free(lockfile);
} else if (type == LOCK_FLOCK) {
gint lockfd;
#if HAVE_FLOCK
if ((lockfd = open(base, O_RDONLY)) < 0) {
#else
if ((lockfd = open(base, O_RDWR)) < 0) {
#endif
FILE_OP_ERROR(base, "open");
return -1;
}
#if HAVE_FLOCK
if (flock(lockfd, LOCK_EX|LOCK_NB) < 0) {
perror("flock");
#else
#if HAVE_LOCKF
if (lockf(lockfd, F_TLOCK, 0) < 0) {
perror("lockf");
#else
{
#endif
#endif /* HAVE_FLOCK */
g_warning("can't lock %s\n", base);
if (close(lockfd) < 0)
perror("close");
return -1;
}
retval = lockfd;
} else {
g_warning("invalid lock type\n");
return -1;
}
return retval;
}
gint unlock_mbox(const gchar *base, gint fd, LockType type)
{
if (type == LOCK_FILE) {
gchar *lockfile;
lockfile = g_strconcat(base, ".lock", NULL);
if (unlink(lockfile) < 0) {
FILE_OP_ERROR(lockfile, "unlink");
g_free(lockfile);
return -1;
}
g_free(lockfile);
return 0;
} else if (type == LOCK_FLOCK) {
#if HAVE_FLOCK
if (flock(fd, LOCK_UN) < 0) {
perror("flock");
#else
#if HAVE_LOCKF
if (lockf(fd, F_ULOCK, 0) < 0) {
perror("lockf");
#else
{
#endif
#endif /* HAVE_FLOCK */
g_warning("can't unlock %s\n", base);
if (close(fd) < 0)
perror("close");
return -1;
}
if (close(fd) < 0) {
perror("close");
return -1;
}
return 0;
}
g_warning("invalid lock type\n");
return -1;
}
gint copy_mbox(const gchar *src, const gchar *dest)
{
return copy_file(src, dest, TRUE);
}
void empty_mbox(const gchar *mbox)
{
if (truncate(mbox, 0) < 0) {
FILE *fp;
FILE_OP_ERROR(mbox, "truncate");
if ((fp = fopen(mbox, "wb")) == NULL) {
FILE_OP_ERROR(mbox, "fopen");
g_warning("can't truncate mailbox to zero.\n");
return;
}
fclose(fp);
}
}
/* read all messages in SRC, and store them into one MBOX file. */
gint export_to_mbox(FolderItem *src, const gchar *mbox)
{
GSList *mlist;
GSList *cur;
MsgInfo *msginfo;
FILE *msg_fp;
FILE *mbox_fp;
gchar buf[BUFFSIZE];
g_return_val_if_fail(src != NULL, -1);
g_return_val_if_fail(src->folder != NULL, -1);
g_return_val_if_fail(mbox != NULL, -1);
debug_print("Exporting messages from %s into %s...\n",
src->path, mbox);
if ((mbox_fp = fopen(mbox, "wb")) == NULL) {
FILE_OP_ERROR(mbox, "fopen");
return -1;
}
mlist = folder_item_get_msg_list(src);
for (cur = mlist; cur != NULL; cur = cur->next) {
msginfo = (MsgInfo *)cur->data;
msg_fp = procmsg_open_message(msginfo);
if (!msg_fp) {
procmsg_msginfo_free(msginfo);
continue;
}
strncpy2(buf,
msginfo->from ? msginfo->from :
cur_account && cur_account->address ?
cur_account->address : "unknown",
sizeof(buf));
extract_address(buf);
fprintf(mbox_fp, "From %s %s",
buf, ctime(&msginfo->date_t));
while (fgets(buf, sizeof(buf), msg_fp) != NULL) {
if (!strncmp(buf, "From ", 5))
fputc('>', mbox_fp);
fputs(buf, mbox_fp);
}
fputc('\n', mbox_fp);
fclose(msg_fp);
procmsg_msginfo_free(msginfo);
}
g_slist_free(mlist);
fclose(mbox_fp);
return 0;
}
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