270 lines
6.7 KiB
C++
270 lines
6.7 KiB
C++
/*
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Copyright (c) 2012, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "libtorrent/rss.hpp"
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#include "libtorrent/session.hpp"
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#include "libtorrent/bencode.hpp"
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#include <signal.h>
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#include <stdio.h>
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using namespace libtorrent;
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namespace lt = libtorrent;
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int load_file(std::string const& filename, std::vector<char>& v, libtorrent::error_code& ec, int limit = 8000000)
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{
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ec.clear();
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FILE* f = fopen(filename.c_str(), "rb");
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if (f == NULL)
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{
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ec.assign(errno, boost::system::generic_category());
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return -1;
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}
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int r = fseek(f, 0, SEEK_END);
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if (r != 0)
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{
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ec.assign(errno, boost::system::generic_category());
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fclose(f);
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return -1;
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}
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long s = ftell(f);
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if (s < 0)
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{
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ec.assign(errno, boost::system::generic_category());
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fclose(f);
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return -1;
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}
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if (s > limit)
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{
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fclose(f);
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return -2;
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}
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r = fseek(f, 0, SEEK_SET);
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if (r != 0)
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{
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ec.assign(errno, boost::system::generic_category());
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fclose(f);
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return -1;
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}
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v.resize(s);
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if (s == 0)
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{
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fclose(f);
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return 0;
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}
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r = fread(&v[0], 1, v.size(), f);
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if (r < 0)
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{
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ec.assign(errno, boost::system::generic_category());
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fclose(f);
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return -1;
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}
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fclose(f);
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if (r != s) return -3;
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return 0;
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}
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void print_feed(feed_status const& f)
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{
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printf("FEED: %s\n",f.url.c_str());
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if (f.error)
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printf("ERROR: %s\n", f.error.message().c_str());
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printf(" %s\n %s\n", f.title.c_str(), f.description.c_str());
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printf(" ttl: %d minutes\n", f.ttl);
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for (std::vector<feed_item>::const_iterator i = f.items.begin()
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, end(f.items.end()); i != end; ++i)
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{
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printf("\033[32m%s\033[0m\n------------------------------------------------------\n"
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" url: %s\n size: %" PRId64 "\n info-hash: %s\n uuid: %s\n description: %s\n"
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" comment: %s\n category: %s\n"
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, i->title.c_str(), i->url.c_str(), i->size
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, i->info_hash.is_all_zeros() ? "" : to_hex(i->info_hash.to_string()).c_str()
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, i->uuid.c_str(), i->description.c_str(), i->comment.c_str(), i->category.c_str());
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}
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}
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std::string const& progress_bar(int progress, int width)
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{
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static std::string bar;
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bar.clear();
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bar.reserve(width + 10);
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int progress_chars = (progress * width + 500) / 1000;
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std::fill_n(std::back_inserter(bar), progress_chars, '#');
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std::fill_n(std::back_inserter(bar), width - progress_chars, '-');
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return bar;
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}
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int save_file(std::string const& filename, std::vector<char>& v)
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{
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using namespace libtorrent;
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file f;
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error_code ec;
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if (!f.open(filename, file::write_only, ec)) return -1;
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if (ec) return -1;
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file::iovec_t b = {&v[0], v.size()};
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size_type written = f.writev(0, &b, 1, ec);
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if (written != int(v.size())) return -3;
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if (ec) return -3;
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return 0;
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}
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volatile bool quit = false;
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void sig(int num)
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{
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quit = true;
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}
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int main(int argc, char* argv[])
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{
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if ((argc == 2 && strcmp(argv[1], "--help") == 0) || argc > 2)
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{
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fprintf(stderr, "usage: rss_reader [rss-url]\n");
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return 0;
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}
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lt::session ses;
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settings_pack pack;
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pack.set_int(settings_pack::active_downloads, 2);
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pack.set_int(settings_pack::active_seeds, 1);
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pack.set_int(settings_pack::active_limit, 3);
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ses.apply_settings(pack);
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std::vector<char> in;
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error_code ec;
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if (load_file(".ses_state", in, ec) == 0)
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{
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lazy_entry e;
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if (lazy_bdecode(&in[0], &in[0] + in.size(), e, ec) == 0)
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ses.load_state(e);
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}
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feed_handle fh;
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if (argc == 2)
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{
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feed_settings feed;
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feed.url = argv[1];
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feed.add_args.save_path = ".";
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fh = ses.add_feed(feed);
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fh.update_feed();
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}
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else
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{
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std::vector<feed_handle> handles;
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ses.get_feeds(handles);
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if (handles.empty())
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{
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printf("usage: rss_reader rss-url\n");
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return 1;
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}
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fh = handles[0];
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}
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feed_status fs = fh.get_feed_status();
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int i = 0;
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char spinner[] = {'|', '/', '-', '\\'};
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fprintf(stderr, "fetching feed ... %c", spinner[i]);
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while (fs.updating)
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{
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sleep(100);
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i = (i + 1) % 4;
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fprintf(stderr, "\b%c", spinner[i]);
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fs = fh.get_feed_status();
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}
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fprintf(stderr, "\bDONE\n");
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print_feed(fs);
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signal(SIGTERM, &sig);
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signal(SIGINT, &sig);
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while (!quit)
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{
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std::vector<torrent_handle> t = ses.get_torrents();
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for (std::vector<torrent_handle>::iterator i = t.begin()
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, end(t.end()); i != end; ++i)
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{
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torrent_status st = i->status();
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std::string const& progress = progress_bar(st.progress_ppm / 1000, 40);
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std::string name = st.name;
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if (name.size() > 70) name.resize(70);
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std::string error = st.error;
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if (error.size() > 40) error.resize(40);
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static char const* state_str[] =
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{"checking (q)", "checking", "dl metadata"
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, "downloading", "finished", "seeding", "allocating", "checking (r)"};
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std::string status = st.paused ? "queued" : state_str[st.state];
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int attribute = 0;
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if (st.paused) attribute = 33;
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else if (st.state == torrent_status::downloading) attribute = 1;
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printf("\033[%dm%2d %-70s d:%-4d u:%-4d %-40s %4d(%4d) %-12s\033[0m\n"
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, attribute, st.queue_position
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, name.c_str(), st.download_rate / 1000
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, st.upload_rate / 1000, !error.empty() ? error.c_str() : progress.c_str()
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, st.num_peers, st.num_seeds, status.c_str());
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}
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sleep(500);
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if (quit) break;
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printf("\033[%dA", int(t.size()));
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}
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printf("saving session state\n");
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{
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entry session_state;
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ses.save_state(session_state);
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std::vector<char> out;
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bencode(std::back_inserter(out), session_state);
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save_file(".ses_state", out);
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}
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printf("closing session");
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return 0;
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}
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