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netsurf/windows/download.c

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/*
* Copyright 2009 Mark Benjamin <netsurf-browser.org.MarkBenjamin@dfgh.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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, see <http://www.gnu.org/licenses/>.
*/
#include <limits.h>
#define _WIN32_IE 0x0500
#include <windows.h>
#include <shlobj.h>
#include <sys/time.h>
#include "content/fetch.h"
#include "desktop/gui.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/url.h"
#include "utils/utils.h"
#include "windows/download.h"
#include "windows/gui.h"
#include "windows/resourceid.h"
static bool downloading = false;
static struct gui_download_window *download1;
static bool nsws_download_window_up(struct gui_download_window *w);
BOOL CALLBACK nsws_download_event_callback(HWND hwnd, UINT msg, WPARAM wparam,
LPARAM lparam);
static void nsws_download_update_label(void *p);
static void nsws_download_update_progress(void *p);
static void nsws_download_clear_data(struct gui_download_window *w);
struct gui_download_window *
gui_download_window_create(download_context *ctx, struct gui_window *gui)
{
if (downloading) {
/* initial implementation */
warn_user("1 download at a time please", 0);
return NULL;
}
downloading = true;
struct gui_download_window *w =
malloc(sizeof(struct gui_download_window));
if (w == NULL) {
warn_user(messages_get("NoMemory"), 0);
return NULL;
}
int total_size = download_context_get_total_length(ctx);
char *domain, *filename, *destination;
const char *url=download_context_get_url(ctx);
bool unknown_size = (total_size == 0);
const char *size = (unknown_size) ?
messages_get("UnknownSize") :
human_friendly_bytesize(total_size);
if (url_nice(url, &filename, false) != URL_FUNC_OK)
filename = strdup(messages_get("UnknownFile"));
if (filename == NULL) {
warn_user(messages_get("NoMemory"), 0);
free(w);
return NULL;
}
if (url_host(url, &domain) != URL_FUNC_OK)
domain = strdup(messages_get("UnknownHost"));
if (domain == NULL) {
warn_user(messages_get("NoMemory"), 0);
free(filename);
free(w);
return NULL;
}
destination = malloc(PATH_MAX);
if (destination == NULL) {
warn_user(messages_get("NoMemory"), 0);
free(domain);
free(filename);
free(w);
return NULL;
}
SHGetFolderPath(NULL, CSIDL_DESKTOP, NULL, SHGFP_TYPE_CURRENT,
destination);
if (strlen(destination) < PATH_MAX - 2)
strcat(destination, "/");
if (strlen(destination) + strlen(filename) < PATH_MAX - 1)
strcat(destination, filename);
LOG(("download %s [%s] from %s to %s", filename, size, domain,
destination));
w->title = filename;
w->domain = domain;
w->size = total_size;
w->total_size = strdup(size);
if (w->total_size == NULL) {
warn_user(messages_get("NoMemory"), 0);
free(destination);
free(domain);
free(filename);
free(w);
return NULL;
}
w->downloaded = 0;
w->speed = 0;
gettimeofday(&(w->start_time), NULL);
w->time_remaining = -1;
w->time_left = NULL;
w->status = DOWNLOAD_NONE;
w->filename = destination;
w->progress = 0;
w->error = 0;
w->window = gui;
w->file = fopen(destination, "wb");
if (w->file == NULL) {
warn_user(messages_get("FileOpenWriteError"), destination);
free(destination);
free(domain);
free(filename);
free(w->total_size);
free(w->time_left);
free(w);
return NULL;
}
download1 = w;
nsws_download_window_up(w);
return w;
}
bool nsws_download_window_up(struct gui_download_window *w)
{
w->hwnd = CreateDialog(hinstance, MAKEINTRESOURCE(IDD_DLG_DOWNLOAD),
gui_window_main_window(w->window),
nsws_download_event_callback);
if (w->hwnd == NULL) {
warn_user(messages_get("NoMemory"), 0);
return false;
}
ShowWindow(w->hwnd, SW_SHOW);
return true;
}
BOOL CALLBACK nsws_download_event_callback(HWND hwnd, UINT msg, WPARAM wparam,
LPARAM lparam)
{
HWND sub;
switch(msg){
case WM_INITDIALOG:
sub = GetDlgItem(hwnd, IDC_DOWNLOAD_LABEL);
nsws_download_update_label((void *)download1);
nsws_download_update_progress((void *)download1);
return TRUE;
case WM_COMMAND:
switch(LOWORD(wparam)) {
case IDOK:
if (download1->downloaded != download1->size)
return TRUE;
case IDCANCEL:
nsws_download_clear_data(download1);
download1 = NULL;
downloading = false;
EndDialog(hwnd, IDCANCEL);
return FALSE;
}
}
return FALSE;
}
void nsws_download_update_label(void *p)
{
struct gui_download_window *w = p;
if (w->hwnd == NULL) {
schedule_remove(nsws_download_update_label, p);
return;
}
HWND sub = GetDlgItem(w->hwnd, IDC_DOWNLOAD_LABEL);
char *size = human_friendly_bytesize(w->downloaded);
int i = 0, temp = w->time_remaining;
if (temp == -1) {
w->time_left = strdup(messages_get("UnknownSize"));
i = strlen(w->time_left);
} else {
do {
temp = temp / 10;
i++;
} while (temp > 2);
w->time_left = malloc(i + SLEN(" s") + 1);
if (w->time_left != NULL) {
if (w->time_remaining > 3600)
sprintf(w->time_left, "%d h",
w->time_remaining / 3600);
else if (w->time_remaining > 60)
sprintf(w->time_left, "%d m",
w->time_remaining / 60);
else
sprintf(w->time_left, "%d s",
w->time_remaining);
}
}
char label[strlen(w->title) + strlen(size) + strlen(w->total_size) +
+ strlen(w->domain) + strlen(w->filename) +
SLEN("download from to \n[\t/\t]\n estimate of time"
" remaining ") + i + 1];
sprintf(label, "download %s from %s to %s\n[%s\t/\t%s] [%d%%]\n"
"estimate of time remaining %s", w->title, w->domain,
w->filename, size, w->total_size, w->progress / 100,
w->time_left);
if (w->time_left != NULL) {
free(w->time_left);
w->time_left = NULL;
}
SendMessage(sub, WM_SETTEXT, (WPARAM)0, (LPARAM)label);
if (w->progress < 10000)
schedule(50, nsws_download_update_label, p);
}
void nsws_download_update_progress(void *p)
{
struct gui_download_window *w = p;
if (w->hwnd == NULL) {
schedule_remove(nsws_download_update_progress, p);
return;
}
HWND sub = GetDlgItem(w->hwnd, IDC_DOWNLOAD_PROGRESS);
SendMessage(sub, PBM_SETPOS, (WPARAM)(w->progress / 100), 0);
if (w->progress < 10000)
schedule(50, nsws_download_update_progress, p);
}
void nsws_download_clear_data(struct gui_download_window *w)
{
if (w == NULL)
return;
if (w->title != NULL)
free(w->title);
if (w->filename != NULL)
free(w->filename);
if (w->domain != NULL)
free(w->domain);
if (w->time_left != NULL)
free(w->time_left);
if (w->total_size != NULL)
free(w->total_size);
if (w->file != NULL)
fclose(w->file);
schedule_remove(nsws_download_update_progress, (void *)w);
schedule_remove(nsws_download_update_label, (void *)w);
}
nserror gui_download_window_data(struct gui_download_window *w, const char *data,
unsigned int size)
{
if ((w == NULL) || (w->file == NULL))
return NSERROR_SAVE_FAILED;
size_t res;
struct timeval val;
res = fwrite((void *)data, 1, size, w->file);
if (res != size)
LOG(("file write error %d of %d", size - res, size));
w->downloaded += res;
w->progress = (unsigned int)(((long long)(w->downloaded) * 10000)
/ w->size);
gettimeofday(&val, NULL);
w->time_remaining = (w->progress == 0) ? -1 :
(int)((val.tv_sec - w->start_time.tv_sec) *
(10000 - w->progress) / w->progress);
return NSERROR_OK;
}
void gui_download_window_error(struct gui_download_window *w,
const char *error_msg)
{
LOG(("error %s", error_msg));
}
void gui_download_window_done(struct gui_download_window *w)
{
if (w == NULL)
return;
downloading = false;
if (w->hwnd != NULL)
EndDialog(w->hwnd, IDOK);
nsws_download_clear_data(w);
}
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