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/*
* xfer-file.c - file functions for xfer plugin
*
* Copyright (C) 2003-2016 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat 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 3 of the License, or
* (at your option) any later version.
*
* WeeChat 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 WeeChat. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <sys/wait.h>
#include "../weechat-plugin.h"
#include "xfer.h"
#include "xfer-file.h"
#include "xfer-buffer.h"
#include "xfer-config.h"
/*
* Resumes a download.
*
* Returns:
* 1: OK
* 0: not resumable
*/
int
xfer_file_resume (struct t_xfer *xfer, const char *filename)
{
struct stat st;
if (!weechat_config_boolean (xfer_config_file_auto_resume))
return 0;
if (access (filename, W_OK) == 0)
{
if (stat (filename, &st) != -1)
{
if ((unsigned long long) st.st_size < xfer->size)
{
xfer->start_resume = (unsigned long long) st.st_size;
xfer->pos = xfer->start_resume;
xfer->last_check_pos = xfer->start_resume;
return 1;
}
}
}
/* not resumable */
return 0;
}
/*
* Searches for local filename for a xfer.
*
* If type is file/recv, adds a suffix (like .1) if needed.
* If download is resumable, sets "start_resume" to good value.
*/
void
xfer_file_find_filename (struct t_xfer *xfer)
{
const char *dir_separator;
char *path, *filename2;
int length;
if (!XFER_IS_FILE(xfer->type))
return;
path = weechat_string_eval_path_home (
weechat_config_string (xfer_config_file_download_path),
NULL, NULL, NULL);
if (!path)
return;
xfer->local_filename = malloc (strlen (path) +
strlen (xfer->remote_nick) +
strlen (xfer->filename) + 4);
if (!xfer->local_filename)
{
free (path);
return;
}
strcpy (xfer->local_filename, path);
dir_separator = weechat_info_get("dir_separator", "");
if (dir_separator
&& (xfer->local_filename[strlen (xfer->local_filename) - 1] != dir_separator[0]))
strcat (xfer->local_filename, dir_separator);
if (weechat_config_boolean (xfer_config_file_use_nick_in_filename))
{
strcat (xfer->local_filename, xfer->remote_nick);
strcat (xfer->local_filename, ".");
}
strcat (xfer->local_filename, xfer->filename);
free (path);
/* file already exists? */
if (access (xfer->local_filename, F_OK) == 0)
{
if (xfer_file_resume (xfer, xfer->local_filename))
return;
/* if auto rename is not set, then abort xfer */
if (!xfer_config_file_auto_rename)
{
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (WEECHAT_HOTLIST_MESSAGE);
return;
}
length = strlen (xfer->local_filename) + 16;
filename2 = malloc (length);
if (!filename2)
{
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (WEECHAT_HOTLIST_MESSAGE);
return;
}
xfer->filename_suffix = 0;
do
{
xfer->filename_suffix++;
snprintf (filename2, length, "%s.%d",
xfer->local_filename,
xfer->filename_suffix);
if (access (filename2, F_OK) == 0)
{
if (xfer_file_resume (xfer, filename2))
break;
}
else
break;
}
while (1);
free (xfer->local_filename);
xfer->local_filename = strdup (filename2);
free (filename2);
}
}
/*
* Calculates xfer speed (for files only).
*/
void
xfer_file_calculate_speed (struct t_xfer *xfer, int ended)
{
time_t local_time, elapsed;
unsigned long long bytes_per_sec_total;
local_time = time (NULL);
if (ended || local_time > xfer->last_check_time)
{
if (ended)
{
/* calculate bytes per second (global) */
elapsed = local_time - xfer->start_transfer;
if (elapsed == 0)
elapsed = 1;
xfer->bytes_per_sec = (xfer->pos - xfer->start_resume) / elapsed;
xfer->eta = 0;
}
else
{
/* calculate ETA */
elapsed = local_time - xfer->start_transfer;
if (elapsed == 0)
elapsed = 1;
bytes_per_sec_total = (xfer->pos - xfer->start_resume) / elapsed;
if (bytes_per_sec_total == 0)
bytes_per_sec_total = 1;
xfer->eta = (xfer->size - xfer->pos) / bytes_per_sec_total;
/* calculate bytes per second (since last check time) */
elapsed = local_time - xfer->last_check_time;
if (elapsed == 0)
elapsed = 1;
xfer->bytes_per_sec = (xfer->pos - xfer->last_check_pos) / elapsed;
}
xfer->last_check_time = local_time;
xfer->last_check_pos = xfer->pos;
}
}
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