mirror of
https://github.com/rakshasa/rtorrent.git
synced 2026-08-09 03:32:29 +00:00
Jari Sundell
143 lines
3.6 KiB
C++
143 lines
3.6 KiB
C++
#include "config.h"
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#include <cassert>
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#include <sys/un.h>
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#include <torrent/connection_manager.h>
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#include <torrent/torrent.h>
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#include <torrent/exceptions.h>
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#include <torrent/net/fd.h>
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#include <torrent/net/poll.h>
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#include <torrent/net/socket_address.h>
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#include "control.h"
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#include "globals.h"
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#include "rpc/scgi_task.h"
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#include "utils/socket_fd.h"
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// TODO: Figure out why moving this to the top causes a build error.
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#include "rpc/scgi.h"
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namespace rpc {
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SCgi::~SCgi() {
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if (!get_fd().is_valid())
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return;
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for (SCgiTask* itr = m_task, *last = m_task + max_tasks; itr != last; ++itr)
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if (itr->is_open())
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itr->close();
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deactivate();
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torrent::connection_manager()->dec_socket_count();
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get_fd().close();
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get_fd().clear();
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if (!m_path.empty())
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::unlink(m_path.c_str());
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}
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void
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SCgi::open_port(void* sa, unsigned int length, bool dontRoute) {
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if (!get_fd().open_stream() ||
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(dontRoute && !get_fd().set_dont_route(true)))
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throw torrent::resource_error("Could not open socket for listening: " + std::string(std::strerror(errno)));
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open(sa, length);
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}
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void
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SCgi::open_named(const std::string& filename) {
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if (filename.empty() || filename.size() > 4096)
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throw torrent::resource_error("Invalid filename length.");
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auto buffer = std::make_unique<char[]>(sizeof(sockaddr_un) + filename.size());
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sockaddr_un* sa = reinterpret_cast<sockaddr_un*>(buffer.get());
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#ifdef __sun__
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sa->sun_family = AF_UNIX;
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#else
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sa->sun_family = AF_LOCAL;
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#endif
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std::memcpy(sa->sun_path, filename.c_str(), filename.size() + 1);
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if (!get_fd().open_local())
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throw torrent::resource_error("Could not open socket for listening.");
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open(sa, offsetof(struct sockaddr_un, sun_path) + filename.size() + 1);
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m_path = filename;
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}
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void
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SCgi::open(void* sa, unsigned int length) {
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try {
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if (!get_fd().set_nonblock() ||
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!get_fd().set_reuse_address(true) ||
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!get_fd().bind_sa(reinterpret_cast<sockaddr*>(sa), length) ||
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!get_fd().listen(max_tasks))
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throw torrent::resource_error("Could not prepare socket for listening: " + std::string(std::strerror(errno)));
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torrent::connection_manager()->inc_socket_count();
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} catch (torrent::resource_error& e) {
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get_fd().close();
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get_fd().clear();
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throw e;
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}
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}
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// TODO: Verify this is run in correct thread, also only ever call poll methods from thread_self.
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void
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SCgi::activate() {
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assert(std::this_thread::get_id() == worker_thread->thread_id() && "SCgi::activate() must be called from the worker thread.");
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torrent::this_thread::poll()->open(this);
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torrent::this_thread::poll()->insert_read(this);
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torrent::this_thread::poll()->insert_error(this);
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}
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void
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SCgi::deactivate() {
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assert(std::this_thread::get_id() == worker_thread->thread_id() && "SCgi::deactivate() must be called from the worker thread.");
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torrent::this_thread::poll()->remove_and_close(this);
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}
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void
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SCgi::event_read() {
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while (true) {
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int fd = torrent::fd_accept(get_fd().get_fd());
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if (fd == -1) {
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if (errno == EAGAIN || errno == EWOULDBLOCK)
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break;
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throw torrent::resource_error("Listener port accept() failed: " + std::string(std::strerror(errno)));
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}
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SCgiTask* task = std::find_if(m_task, m_task + max_tasks, std::mem_fn(&SCgiTask::is_available));
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if (task == m_task + max_tasks) {
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torrent::fd_close(fd);
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continue;
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}
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task->open(this, fd);
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}
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}
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void
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SCgi::event_write() {
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throw torrent::internal_error("Listener does not support write().");
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}
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void
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SCgi::event_error() {
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throw torrent::internal_error("SCGI listener port received an error event.");
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}
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}
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