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/*
* Copyright (C) 2010 Robin H.Johnson, Ovechko Kostyantyn <fastinetserver@gmail.com>.
*
* Project: IDFetch.
* Developer: Ovechko Kostyantyn Olexandrovich (Kharkiv State Technical University of Construction and Architecture, Ukraine).
* Mentor: Robin H. Johnson (Gentoo Linux: Developer, Trustee & Infrastructure Lead).
* Mentoring organization: Gentoo Linux.
* Sponsored by GSOC 2010.
*
* This file is part of Segget.
*
* Segget is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Segget 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Segget; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "segment.h"
void Tsegment::set_segment(void *prnt_distfile, uint seg_num, string distfile_name, ulong default_seg_size, ulong range_end){
try{
parent_distfile=prnt_distfile;
segment_num=seg_num;
segment_size=range_end-seg_num*default_seg_size+1;
range=toString(seg_num*default_seg_size)+"-"+toString(range_end);
file_name="."+distfile_name+".seg"+toString(seg_num);
ulong downloaded_size;
if (settings.get_resume()){
//check if downloaded
ifstream file((settings.segments_dir+"/"+file_name).c_str(), ios::in|ios::binary);
ulong start = file.tellg();
file.seekg (0, ios::end);
ulong end = file.tellg();
downloaded_size = end - start;
debug("seg:"+toString(seg_num)+" Dsize="+toString(downloaded_size)+" seg_size="+toString(segment_size));
file.close();
if (downloaded_size==segment_size){
status=DOWNLOADED;
debug("seg:"+toString(seg_num)+" Downloaded");
}
else{
debug("seg:"+toString(seg_num)+" not downloaded");
downloaded_bytes=0;
}
}
}catch(...){
error_log("Error in segment.cpp: prepare_for_connection()");
}
}
void Tsegment::prepare_for_connection(CURLM *cm, uint con_num, uint network_num, uint distfile_num, string segment_url){
try{
msg_connecting(con_num,distfile_num, segment_num,"Downloading from "+segment_url);
segments_in_progress[con_num]=this;
status=DOWNLOADING;
downloaded_bytes=0;
connection_num=con_num;
connection_array[con_num].start(network_num);
url=segment_url;
try_num++;
add_easy_handle_to_multi(cm, network_num);
}catch(...){
error_log("Error in segment.cpp: prepare_for_connection()");
}
}
Tsegment::~Tsegment(){
//try
segment_file.close();
}
int Tsegment::add_easy_handle_to_multi(CURLM *cm, uint network_num){
segment_file.exceptions (ofstream::badbit);
try{
segment_file.open((settings.segments_dir+"/"+file_name).c_str(), ios::trunc|ios::binary );
}catch(std::ifstream::failure e){
if (!segment_file.eof()){
error_log("Can't open segment file:"+settings.segments_dir+"/"+file_name+": "+(string)e.what());
return 1;
}
}catch(...){
error_log("Unknown error: Can't open segment file:"+settings.segments_dir+"/"+file_name);
return 1;
}
try{
easyhandle = curl_easy_init();
if(easyhandle) {
curl_easy_setopt(easyhandle, CURLOPT_URL, url.c_str() );
curl_easy_setopt(easyhandle, CURLOPT_WRITEDATA, this);
curl_easy_setopt(easyhandle, CURLOPT_PRIVATE, this);
curl_easy_setopt(easyhandle, CURLOPT_RANGE, range.c_str());
curl_easy_setopt(easyhandle, CURLOPT_TIMEOUT, network_array[network_num].time_out);
curl_easy_setopt(easyhandle, CURLOPT_FTP_RESPONSE_TIMEOUT, network_array[network_num].ftp_response_timeout);
if ((network_array[network_num].low_connection_speed_limit!=0) and (network_array[network_num].low_connection_speed_limit!=(ulong)-1)){
curl_easy_setopt(easyhandle, CURLOPT_LOW_SPEED_LIMIT, network_array[network_num].low_connection_speed_limit);
}
curl_easy_setopt(easyhandle, CURLOPT_LOW_SPEED_TIME, network_array[network_num].low_connection_speed_time);
if ((network_array[network_num].max_connection_speed!=0) and (network_array[network_num].max_connection_speed!=(ulong)-1)){
curl_easy_setopt(easyhandle, CURLOPT_MAX_RECV_SPEED_LARGE, network_array[network_num].max_connection_speed);
}
curl_easy_setopt(easyhandle, CURLOPT_USERAGENT, network_array[network_num].user_agent.c_str());
if (network_array[network_num].proxy_off)
curl_easy_setopt(easyhandle, CURLOPT_NOPROXY, "*");
else{
if ((network_array[network_num].proxy_ip_or_name!="none") and (network_array[network_num].proxy_port!=0)){
curl_easy_setopt(easyhandle, CURLOPT_PROXY, network_array[network_num].proxy_ip_or_name.c_str());
curl_easy_setopt(easyhandle, CURLOPT_PROXYPORT, network_array[network_num].proxy_port);
debug("Using proxy:"+network_array[network_num].proxy_ip_or_name+":"+toString(network_array[network_num].proxy_port));
}
if (network_array[network_num].proxy_user!="none"){
curl_easy_setopt(easyhandle, CURLOPT_PROXYUSERNAME, network_array[network_num].proxy_user.c_str());
if (network_array[network_num].proxy_password!="none")
curl_easy_setopt(easyhandle, CURLOPT_PROXYPASSWORD, network_array[network_num].proxy_password.c_str());
}
}
if ((network_array[network_num].bind_interface!="none")
and (network_array[network_num].bind_interface!=""))
curl_easy_setopt(easyhandle, CURLOPT_INTERFACE, network_array[network_num].bind_interface.c_str());
//set connection timeout
curl_easy_setopt(easyhandle, CURLOPT_CONNECTTIMEOUT, network_array[network_num].connection_timeout);
curl_easy_setopt(easyhandle, CURLOPT_WRITEFUNCTION, write_data);
curl_multi_add_handle(cm, easyhandle);
return 0;
}else
return 1;
}catch(...){
error_log("Error in segment.cpp: add_easy_handle_to_multi()");
return 1;
}
}
void show_progress(double time_diff){
try{
stats.total_bytes_per_last_interval=0;
for (uint con_num=0; con_num<MAX_CONNECTS; con_num++){
// ulong speed=bytes_written*1000/(diff_sec+diff_milli);
//if connection is not NULL
connection_array[con_num].show_connection_progress(time_diff);
}
stats.last_time_interval=time_diff;
stats.show_totals();
}
catch(...){
error_log("Error in segment.cpp: show_progress()");
}
}
size_t write_data(void *buffer, size_t size, size_t nmemb, void *cur_segment){
ulong bytes_written=size*nmemb;
try{
Tsegment *segment;
segment =(Tsegment*)cur_segment;
segment->downloaded_bytes+=nmemb;
try{
segment->segment_file.write((char*)buffer,nmemb*size);
}
catch(...){
error_log("Can't write segment file:"+segment->file_name);
}
connection_array[segment->connection_num].inc_bytes_per_last_interval(bytes_written);
ulong time_diff_msecs=time_left_from(stats.previous_time);
if (time_diff_msecs >= settings.current_speed_time_interval_msecs){
show_progress(time_diff_msecs);
stats.reset_previous_time();
};
}
catch(...){
error_log("Error in segment.cpp: write_data()");
}
return bytes_written;
}
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