index/cydir/cydir-mail.c

	cydir-mail.c revision bddd52cb7f3e5a894c080f60750aa76b5aeaf103
/* Copyright (c) 2007-2009 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "istream.h"
#include "index-mail.h"
#include "cydir-storage.h"

#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>

static const char *cydir_mail_get_path(struct mail *mail)
{
    const char *dir;

    dir = mailbox_list_get_path(mail->box->list, mail->box->name,
                    MAILBOX_LIST_PATH_TYPE_MAILBOX);
    return t_strdup_printf("%s/%u.", dir, mail->uid);
}

static int cydir_mail_stat(struct mail *mail, struct stat *st_r)
{
    struct mail_private *p = (struct mail_private *)mail;
    const char *path;

    if (mail->lookup_abort == MAIL_LOOKUP_ABORT_NOT_IN_CACHE)
        return mail_set_aborted(mail);

    p->stats_stat_lookup_count++;
    path = cydir_mail_get_path(mail);
    if (stat(path, st_r) < 0) {
        if (errno == ENOENT)
            mail_set_expunged(mail);
        else {
            mail_storage_set_critical(mail->box->storage,
                          "stat(%s) failed: %m", path);
        }
        return -1;
    }
    return 0;
}

static int cydir_mail_get_received_date(struct mail *_mail, time_t *date_r)
{
    struct index_mail *mail = (struct index_mail *)_mail;
    struct index_mail_data *data = &mail->data;
    struct stat st;

    if (index_mail_get_received_date(_mail, date_r) == 0)
        return 0;

    if (cydir_mail_stat(_mail, &st) < 0)
        return -1;

    data->received_date = st.st_mtime;
    *date_r = data->received_date;
    return 0;
}

static int cydir_mail_get_save_date(struct mail *_mail, time_t *date_r)
{
    struct index_mail *mail = (struct index_mail *)_mail;
    struct index_mail_data *data = &mail->data;
    struct stat st;

    if (index_mail_get_save_date(_mail, date_r) == 0)
        return 0;

    if (cydir_mail_stat(_mail, &st) < 0)
        return (time_t)-1;

    data->save_date = st.st_ctime;
    *date_r = data->save_date;
    return 0;
}

static int cydir_mail_get_physical_size(struct mail *_mail, uoff_t *size_r)
{
    struct index_mail *mail = (struct index_mail *)_mail;
    struct index_mail_data *data = &mail->data;
    struct stat st;

    if (index_mail_get_physical_size(_mail, size_r) == 0)
        return 0;

    if (cydir_mail_stat(_mail, &st) < 0)
        return -1;

    data->physical_size = data->virtual_size = st.st_size;
    *size_r = data->physical_size;
    return 0;
}

static int
cydir_mail_get_stream(struct mail *_mail, struct message_size *hdr_size,
              struct message_size *body_size, struct istream **stream_r)
{
    struct index_mail *mail = (struct index_mail *)_mail;
    const char *path;
    int fd;

    if (mail->data.stream == NULL) {
        mail->mail.stats_open_lookup_count++;
        path = cydir_mail_get_path(_mail);
        fd = open(path, O_RDONLY);
        if (fd == -1) {
            if (errno == ENOENT)
                mail_set_expunged(_mail);
            else {
                mail_storage_set_critical(_mail->box->storage,
                    "open(%s) failed: %m", path);
            }
            return -1;
        }
        mail->data.stream =
            i_stream_create_fd(fd, MAIL_READ_BLOCK_SIZE, TRUE);
    }

    return index_mail_init_stream(mail, hdr_size, body_size, stream_r);
}

struct mail_vfuncs cydir_mail_vfuncs = {
    index_mail_close,
    index_mail_free,
    index_mail_set_seq,
    index_mail_set_uid,
    index_mail_set_uid_cache_updates,

    index_mail_get_flags,
    index_mail_get_keywords,
    index_mail_get_keyword_indexes,
    index_mail_get_modseq,
    index_mail_get_parts,
    index_mail_get_date,
    cydir_mail_get_received_date,
    cydir_mail_get_save_date,
    cydir_mail_get_physical_size, /* physical = virtual in our case */
    cydir_mail_get_physical_size,
    index_mail_get_first_header,
    index_mail_get_headers,
    index_mail_get_header_stream,
    cydir_mail_get_stream,
    index_mail_get_special,
    index_mail_update_flags,
    index_mail_update_keywords,
    index_mail_update_uid,
    index_mail_expunge,
    index_mail_set_cache_corrupted,
    index_mail_get_index_mail
};