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Check if pointers exist before free()ing them. Good habit.

This commit is contained in:
Mario Fetka 2010-09-01 08:36:24 +02:00
parent a86ce551d4
commit f7cff3653e
2 changed files with 11 additions and 735 deletions
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731
src/download_win.cpp~
View File

@ -1,731 +0,0 @@
/******************************************************************************
fltk prozilla - a front end for prozilla, a download accelerator library
Copyright (C) 2001 Kalum Somaratna
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
******************************************************************************/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <limits.h>
#include <errno.h>
#ifdef HAVE_NCURSES_H
#include <ncurses.h>
#else
#include <curses.h>
#endif
#include "main.h"
#include "download_win.h"
#include "interface.h"
void
DL_Window::cleanup (boolean erase_dlparts)
{
/*handle cleanup */
if (status == DL_DOWNLOADING)
{
proz_download_stop_downloads (download);
if (erase_dlparts == TRUE)
{
proz_download_delete_target (download);
proz_log_delete_logfile (download);
}
}
else if (status == DL_GETTING_INFO)
{
/*terminate info thread */
pthread_cancel (info_thread);
pthread_join (info_thread, NULL);
}
else if (status == DL_JOINING)
{
/*terminate joining thread */
proz_download_cancel_joining_thread (download);
pthread_join (download->join_thread, NULL);
}
else if (status == DL_FTPSEARCHING)
{
ftpsearch_win->cleanup ();
}
status = DL_ABORTED;
}
DL_Window::~DL_Window ()
{
proz_connection_free_connection (connection, true);
delete (ftpsearch_win);
}
DL_Window::DL_Window (urlinfo * url_data)
{
// key = 0;
got_info = FALSE;
got_dl = FALSE;
status = DL_IDLING;
memcpy (&u, url_data, sizeof (u));
memset (&update_time, 0, sizeof (struct timeval));
num_connections = rt.num_connections;
ftpsearch_win = new FTPS_Window ();
do_ftpsearch = FALSE;
using_ftpsearch = FALSE;
}
void
DL_Window::my_cb ()
{
if (status == DL_GETTING_INFO)
{
handle_info_thread ();
return;
}
// if ((got_info == TRUE && status == DL_IDLING && got_dl == FALSE)
if ((status == DL_RESTARTING && got_info == TRUE)
|| status == DL_DLPRESTART)
{
do_download ();
}
if (status == DL_DOWNLOADING)
{
handle_download_thread ();
return;
}
if (status == DL_JOINING)
{
handle_joining_thread ();
return;
}
if (status == DL_FATALERR)
{
handle_dl_fatal_error ();
return;
}
if (status == DL_PAUSED)
{
//TODO what to do when paused
return;
}
if (status == DL_FTPSEARCHING)
{
handle_ftpsearch ();
return;
}
}
void
DL_Window::dl_start (int num_connections, boolean ftpsearch)
{
do_ftpsearch = ftpsearch;
connection = proz_connection_init (&u, &getinfo_mutex);
proz_connection_set_msg_proc (connection, ms, this);
PrintMessage("Creating the thread that gets info about file..\n");
proz_get_url_info_loop (connection, &info_thread);
status = DL_GETTING_INFO;
}
void
DL_Window::do_download ()
{
logfile lf;
status = DL_DLPRESTART;
//setup the download
download = proz_download_init (&connection->u);
proz_debug("proz_download_init complete");
handle_prev_download ();
if(status==DL_FATALERR)
{
return;
}
if(download->resume_mode ==TRUE)
{
if (proz_log_read_logfile(&lf, download, FALSE) != 1)
{
PrintMessage
("A error occured while processing the logfile! Assuming default number of connections");
}
// validate the info returned
//TODO check whether files size is the same and if not prompt the user what to do.
if (lf.num_connections != num_connections)
{
PrintMessage
("The previous download used a different number of connections than the default! so I will use the previous number of threads");
num_connections = lf.num_connections;
assert(num_connections > 0);
// cleanup(FALSE);
}
}
if (rt.display_mode == DISP_CURSES)
erase();
start_download ();
}
void
DL_Window::handle_prev_download ()
{
int ret = 0;
/* we will check and see if 1. previous partial download exists and
2. if the file to be downloaded already exists in the local
directory
*/
//Check and see if the file is already downloaded..
//check the --no-getch flag
if (rt.dont_prompt != TRUE)
{
int target_exists=proz_download_target_exist(download);
if(target_exists)
{
ret=askUserOverwrite(connection);
if(ret=='O')
{
//just continue, it will anyway be overwritten by the download routines.
}
if(ret=='A')
{
status = DL_FATALERR;
return;
}
}
}
/*Check for a prior download */
int previous_dl = proz_download_prev_download_exists (download);
if (previous_dl == 1)
{
download->resume_mode = TRUE;
//connection supports resume
if (connection->resume_support)
{
//check the --no-getch flag
if (rt.dont_prompt == TRUE)
{
//see if the user had a preference, resume or overwrite
if (rt.resume_mode == TRUE)
download->resume_mode = TRUE;
else
if (rt.force_mode == TRUE)
download->resume_mode = FALSE;
}
else
{
//ask the user (curses or terminal)
ret = askUserResume(connection, true);
if (ret == 'R')
download->resume_mode = TRUE;
else
download->resume_mode = FALSE;
}
}
else
{//resume NOT supported
// --no-getch and no force-mode means fatal error!!!
if (rt.dont_prompt == TRUE && rt.force_mode == FALSE)
{
status = DL_FATALERR;
handle_dl_fatal_error ();
return;
}
//force overwrite
if (rt.dont_prompt == TRUE && rt.force_mode == TRUE)
download->resume_mode = FALSE;
else
{
//Ask the user
ret = askUserResume(connection, false);
if (ret == 'O')
download->resume_mode = FALSE;
else
{ //Abort
status = DL_FATALERR;
handle_dl_fatal_error ();
return;
}
}
}
}
}
void
DL_Window::start_download ()
{
int ret = 0;
proz_debug("start_download");
if (using_ftpsearch != TRUE)
ret = num_connections =
proz_download_setup_connections_no_ftpsearch
(download, connection, num_connections);
else
ret = proz_download_setup_connections_ftpsearch (download,
connection,
ftpsearch_win->
request,
num_connections);
if (ret == -1)
{
PrintMessage("Write Error: There may not be enough free space or a disk write failed when attempting to create output file\n");
status = DL_ABORTED;
return;
}
/*Display resume status */
if (download->resume_support)
{
PrintMessage("RESUME supported\n\n");
}
else
{
PrintMessage("RESUME NOT supported\n");
}
gettimeofday (&update_time, NULL);
proz_download_start_downloads (download, download->resume_mode);
status = DL_DOWNLOADING;
return;
}
void
DL_Window::handle_info_thread ()
{
bool getting_info = proz_connection_running (connection);
if (getting_info == FALSE)
{
pthread_join (info_thread, NULL);
if (connection->err == HOK || connection->err == FTPOK)
{
got_info = TRUE;
if (connection->main_file_size != -1)
{
PrintMessage("File Size = %lld Kb\n\n",
connection->main_file_size / 1024);
}
else
PrintMessage("File Size is UNKOWN\n\n");
//Added ftpsearch only is size > min size
if ((connection->main_file_size != -1
&& do_ftpsearch == TRUE) && (connection->main_file_size / 1024 >= rt.min_search_size))
{
status = DL_FTPSEARCHING;
if (rt.ftpsearch_server_id == 0)
{
ftpsearch_win->
fetch_mirror_info
(&connection->u,
connection->main_file_size,
"http://www.filesearching.com/cgi-bin/s",
FILESEARCH_RU,
rt.ftps_mirror_req_n);
}
else if (rt.ftpsearch_server_id == 1)
{
ftpsearch_win->
fetch_mirror_info
(&connection->u,
connection->main_file_size,
"http://ftpsearch.elmundo.es:8000/ftpsearch",
LYCOS, rt.ftps_mirror_req_n);
}
}
else
{
if (connection->main_file_size / 1024 >= rt.min_search_size && (do_ftpsearch == TRUE))
PrintMessage("File size is less than the minimum, skipping ftpsearch");
do_download ();
}
}
else
{
if (connection->err == FTPNSFOD
|| connection->err == HTTPNSFOD)
{
PrintMessage("The URL %s doesnt exist!\n",
connection->u.url);
got_dl = FALSE;
got_info = FALSE;
status = DL_FATALERR;
}
else
{
PrintMessage("An error occurred: %s \n",
proz_strerror(connection->err));
got_dl = FALSE;
got_info = FALSE;
status = DL_FATALERR;
}
}
}
}
void
DL_Window::handle_ftpsearch ()
{
uerr_t err;
err = ftpsearch_win->callback ();
if (err == MASSPINGDONE)
{
if (ftpsearch_win->request->num_mirrors == 0)
{
using_ftpsearch = FALSE;
PrintMessage("No suitable mirrors were found, downloading from original server\n");
do_download ();
return;
}
using_ftpsearch = TRUE;
do_download ();
return;
}
if (err == FTPSFAIL)
{
using_ftpsearch = FALSE;
do_download ();
return;
}
// if(ftpsearch_win->exit_ftpsearch_button_pressed==TRUE)
if (using_ftpsearch == TRUE)
{
if (ftpsearch_win->got_mirror_info == TRUE)
{
using_ftpsearch = TRUE;
}
else
{
using_ftpsearch = FALSE;
}
do_download ();
}
}
void
DL_Window::handle_download_thread ()
{
uerr_t err;
struct timeval cur_time;
struct timeval diff_time;
err = proz_download_handle_threads (download);
gettimeofday (&cur_time, NULL);
proz_timeval_subtract (&diff_time, &cur_time, &update_time);
if ((((diff_time.tv_sec * 1000) + (diff_time.tv_usec / 1000)) > 200)
|| err == DLDONE)
{
print_status (download, rt.quiet_mode);
if (download->main_file_size != -1)
{
}
/*The time of the current screen */
gettimeofday (&update_time, NULL);
}
if (err == DLDONE)
{
PrintMessage("Got DL succesfully, now renaming file\n");
/* if (rt.display_mode == DISP_STDOUT)
print_status (download, FALSE);
else
DisplayCursesInfo(download);
*/
got_dl = TRUE;
PrintMessage ("Renaming file %s .....\n",
download->u.file);
status = DL_JOINING;
proz_download_join_downloads (download);
joining_thread_running = TRUE;
}
if (err == CANTRESUME)
{
/*We can only use one connections and we cant resume */
num_connections = 1;
connection->resume_support = FALSE;
got_dl = FALSE;
status = DL_RESTARTING;
}
if (err == DLLOCALFATAL)
{
PrintMessage ("One connection of the download %s encountered a unrecoverable local error, usually lack of free space, or a write to bad medium, or a problem with permissions,so please fix this and retry\n",
connection->u.url);
got_dl = FALSE;
status = DL_FATALERR;
}
if (err == DLREMOTEFATAL)
{
PrintMessage (_
("A connection(s) of the download %s encountered a unrecoverable remote error, usually the file not being present in the remote server, therefore the download had to be aborted!\n"),
connection->u.url);
got_dl = FALSE;
status = DL_FATALERR;
}
}
void
DL_Window::handle_joining_thread ()
{
boolean bDone = false;
uerr_t building_status = proz_download_get_join_status (download);
if (building_status == JOINERR)
{
if (joining_thread_running == TRUE)
{
proz_download_wait_till_end_joining_thread (download);
joining_thread_running = FALSE;
}
}
if (building_status == JOINDONE)
{
if (joining_thread_running == TRUE)
{
proz_download_wait_till_end_joining_thread (download);
joining_thread_running = FALSE;
bDone = true;
}
/*has the user pressed OK at the end of the download */
if (bDone == true)
{
PrintMessage("All Done.\n");
//curses_query_user_input("Press any key to exit.");
proz_download_delete_dl_file (download);
proz_download_free_download (download, 0);
status = DL_IDLING;
}
status = DL_DONE;
}
}
void
DL_Window::handle_dl_fatal_error ()
{
status = DL_FATALERR;
cleanup (FALSE);
return;
}
void
DL_Window::print_status (download_t * download, int quiet_mode)
{
if (rt.display_mode == DISP_CURSES)
DisplayCursesInfo(download);
else
{
if (quiet_mode == FALSE)
{
for (int i = 0; i < download->num_connections; i++)
{
fprintf (stdout,
"%2.2d %-30.30s %15.15s %10Ld\n",
i + 1, download->pconnections[i]->u.host,
proz_connection_get_status_string (download->
pconnections
[i]),
proz_connection_get_total_bytes_got
(download->pconnections[i]));
}
fprintf (stdout, "Total Bytes received %Ld Kb\n",
proz_download_get_total_bytes_got (download) / 1024);
fprintf (stdout, "Average Speed = %.3f Kb/sec\n",
proz_download_get_average_speed (download) / 1024);
}
int secs_left;
char timeLeft[30];
if ((secs_left =
proz_download_get_est_time_left (download)) != -1)
{
if (secs_left < 60)
snprintf (timeLeft, sizeof(timeLeft), "00:%.2d", secs_left);
else if (secs_left < 3600)
snprintf (timeLeft, sizeof(timeLeft), "00:%.2d:%.2d",
secs_left / 60, secs_left % 60);
else
snprintf (timeLeft, sizeof(timeLeft), "%.2d:%.2d:00",
secs_left / 3600,
(secs_left % 3600) / 60);
}
else
sprintf (timeLeft, "??:??:??");
off_t totalDownloaded = 0;
off_t totalFile = 0;
long aveSpeed = 0;
totalFile = download->main_file_size / 1024;
totalDownloaded =
proz_download_get_total_bytes_got (download) /
1024;
aveSpeed = (long)(proz_download_get_average_speed (download) / 1024);
//WGET looks like this:
//xx% [=======> ] nnn,nnn,nnn XXXX.XXK/s ETA hh:mm:ss
fprintf (stdout, " %.2lf%% %lldKb/%lldkb %0.3fKb/s ETA %s \r",
((float)totalDownloaded) / ((float)totalFile / 100),
totalDownloaded, totalFile, (float)aveSpeed, timeLeft);
fflush (stdout);
}
}
int DL_Window::askUserResume(connection_t *connection, boolean resumeSupported)
{
int ret = 0;
const char msg[] = "Previous download of %s exists, would you like to (R)esume it or (O)verwrite it?";
const char msg2[] = "Previous download of %s exists, would you like to (A)bort it or (O)verwrite it?";
do {
if (rt.display_mode == DISP_CURSES)
ret = curses_query_user_input((resumeSupported == TRUE)?msg:msg2,connection->u.file);
else
{
fprintf(stdout,"\n");
fprintf(stdout,(resumeSupported == TRUE)?msg:msg2,connection->u.file);
ret = getc(stdin);
ret = islower(ret) ? toupper(ret) : ret;
}
switch(ret)
{
case 'O':
break;
case 'A':
if (resumeSupported == TRUE)
ret=0;
break;
case 'R':
if (resumeSupported == FALSE)
ret=0;
break;
default:
ret=0;
break;
}
} while (ret == 0);
return ret;
}
int DL_Window::askUserOverwrite(connection_t *connectionb)
{
int ret = 0;
const char msg[] = "File %s already exists, would you like to (A)bort it or (O)verwrite it?";
do {
if (rt.display_mode == DISP_CURSES)
ret = curses_query_user_input(msg,connection->u.file);
else
{
fprintf(stdout,"\n");
fprintf(stdout,msg,connection->u.file);
ret = getc(stdin);
ret = islower(ret) ? toupper(ret) : ret;
}
switch(ret)
{
case 'O':
break;
case 'A':
break;
default:
ret=0;
break;
}
} while (ret == 0);
return ret;
}

15
src/main.cpp
View File

@ -510,6 +510,9 @@ main (int argc, char **argv)
proz_debug
("%s does not seem to be a valid URL",
argv[optind]);
if(url_data)
free(url_data);
shutdown();
exit (0);
}
@ -523,13 +526,17 @@ main (int argc, char **argv)
/*If the download failed the return -1 */
if(ret==-1)
{
free(url_data);
delete(dl_win);
if(url_data)
free(url_data);
if(dl_win)
delete(dl_win);
shutdown();
return -1;
}
delete(dl_win);
free (url_data);
if(dl_win)
delete(dl_win);
if(url_data)
free (url_data);
}
}