diff options
Diffstat (limited to '')
| -rw-r--r-- | src/input/SoupInputPlugin.cxx | 492 |
1 files changed, 0 insertions, 492 deletions
diff --git a/src/input/SoupInputPlugin.cxx b/src/input/SoupInputPlugin.cxx deleted file mode 100644 index e9767c20e..000000000 --- a/src/input/SoupInputPlugin.cxx +++ /dev/null @@ -1,492 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "SoupInputPlugin.hxx" -#include "InputPlugin.hxx" -#include "InputStream.hxx" -#include "InputInternal.hxx" -#include "IOThread.hxx" -#include "event/Loop.hxx" -#include "conf.h" - -extern "C" { -#include <libsoup/soup-uri.h> -#include <libsoup/soup-session-async.h> -} - -#include <assert.h> -#include <string.h> - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "input_soup" - -/** - * Do not buffer more than this number of bytes. It should be a - * reasonable limit that doesn't make low-end machines suffer too - * much, but doesn't cause stuttering on high-latency lines. - */ -static const size_t SOUP_MAX_BUFFERED = 512 * 1024; - -/** - * Resume the stream at this number of bytes after it has been paused. - */ -static const size_t SOUP_RESUME_AT = 384 * 1024; - -static SoupURI *soup_proxy; -static SoupSession *soup_session; - -struct SoupInputStream { - struct input_stream base; - - SoupMessage *msg; - - GQueue *buffers; - - size_t current_consumed; - - size_t total_buffered; - - bool alive, pause, eof; - - /** - * Set when the session callback has been invoked, when it is - * safe to free this object. - */ - bool completed; - - GError *postponed_error; - - SoupInputStream(const char *uri, Mutex &mutex, Cond &cond); - ~SoupInputStream(); - - bool CopyError(const SoupMessage *msg); - - bool WaitData(); - - size_t Read(void *ptr, size_t size, GError **error_r); -}; - -static inline GQuark -soup_quark(void) -{ - return g_quark_from_static_string("soup"); -} - -static bool -input_soup_init(const struct config_param *param, GError **error_r) -{ - assert(soup_proxy == NULL); - assert(soup_session == NULL); - - g_type_init(); - - const char *proxy = config_get_block_string(param, "proxy", NULL); - - if (proxy != NULL) { - soup_proxy = soup_uri_new(proxy); - if (soup_proxy == NULL) { - g_set_error(error_r, soup_quark(), 0, - "failed to parse proxy setting"); - return false; - } - } - - soup_session = - soup_session_async_new_with_options(SOUP_SESSION_PROXY_URI, - soup_proxy, - SOUP_SESSION_ASYNC_CONTEXT, - io_thread_get().GetContext(), - NULL); - - return true; -} - -static void -input_soup_finish(void) -{ - assert(soup_session != NULL); - - soup_session_abort(soup_session); - g_object_unref(G_OBJECT(soup_session)); - - if (soup_proxy != NULL) - soup_uri_free(soup_proxy); -} - -/** - * Copy the error from the SoupMessage object to - * input_soup::postponed_error. - * - * @return true if there was no error - */ -bool -SoupInputStream::CopyError(const SoupMessage *src) -{ - if (SOUP_STATUS_IS_SUCCESSFUL(src->status_code)) - return true; - - if (src->status_code == SOUP_STATUS_CANCELLED) - /* failure, but don't generate a GError, because this - status was caused by _close() */ - return false; - - if (postponed_error != nullptr) - /* there's already a GError, don't overwrite it */ - return false; - - if (SOUP_STATUS_IS_TRANSPORT_ERROR(src->status_code)) - postponed_error = - g_error_new(soup_quark(), src->status_code, - "HTTP client error: %s", - src->reason_phrase); - else - postponed_error = - g_error_new(soup_quark(), src->status_code, - "got HTTP status: %d %s", - src->status_code, src->reason_phrase); - - return false; -} - -static void -input_soup_session_callback(G_GNUC_UNUSED SoupSession *session, - SoupMessage *msg, gpointer user_data) -{ - SoupInputStream *s = (SoupInputStream *)user_data; - - assert(msg == s->msg); - assert(!s->completed); - - const ScopeLock protect(s->base.mutex); - - if (!s->base.ready) - s->CopyError(msg); - - s->base.ready = true; - s->alive = false; - s->completed = true; - - s->base.cond.broadcast(); -} - -static void -input_soup_got_headers(SoupMessage *msg, gpointer user_data) -{ - SoupInputStream *s = (SoupInputStream *)user_data; - - s->base.mutex.lock(); - - if (!s->CopyError(msg)) { - s->base.mutex.unlock(); - - soup_session_cancel_message(soup_session, msg, - SOUP_STATUS_CANCELLED); - return; - } - - s->base.ready = true; - s->base.cond.broadcast(); - s->base.mutex.unlock(); - - soup_message_body_set_accumulate(msg->response_body, false); -} - -static void -input_soup_got_chunk(SoupMessage *msg, SoupBuffer *chunk, gpointer user_data) -{ - SoupInputStream *s = (SoupInputStream *)user_data; - - assert(msg == s->msg); - - const ScopeLock protect(s->base.mutex); - - g_queue_push_tail(s->buffers, soup_buffer_copy(chunk)); - s->total_buffered += chunk->length; - - if (s->total_buffered >= SOUP_MAX_BUFFERED && !s->pause) { - s->pause = true; - soup_session_pause_message(soup_session, msg); - } - - s->base.cond.broadcast(); - s->base.mutex.unlock(); -} - -static void -input_soup_got_body(G_GNUC_UNUSED SoupMessage *msg, gpointer user_data) -{ - SoupInputStream *s = (SoupInputStream *)user_data; - - assert(msg == s->msg); - - const ScopeLock protect(s->base.mutex); - - s->base.ready = true; - s->eof = true; - s->alive = false; - - s->base.cond.broadcast(); - s->base.mutex.unlock(); -} - -inline bool -SoupInputStream::WaitData() -{ - while (true) { - if (eof) - return true; - - if (!alive) - return false; - - if (!g_queue_is_empty(buffers)) - return true; - - assert(current_consumed == 0); - - base.cond.wait(base.mutex); - } -} - -static gpointer -input_soup_queue(gpointer data) -{ - SoupInputStream *s = (SoupInputStream *)data; - - soup_session_queue_message(soup_session, s->msg, - input_soup_session_callback, s); - - return NULL; -} - -SoupInputStream::SoupInputStream(const char *uri, - Mutex &mutex, Cond &cond) - :base(input_plugin_soup, uri, mutex, cond), - buffers(g_queue_new()), - current_consumed(0), total_buffered(0), - alive(false), pause(false), eof(false), completed(false), - postponed_error(nullptr) -{ -#if GCC_CHECK_VERSION(4,6) -#pragma GCC diagnostic push - /* the libsoup macro SOUP_METHOD_GET discards the "const" - attribute of the g_intern_static_string() return value; - don't make the gcc warning fatal: */ -#pragma GCC diagnostic ignored "-Wcast-qual" -#endif - - msg = soup_message_new(SOUP_METHOD_GET, uri); - -#if GCC_CHECK_VERSION(4,6) -#pragma GCC diagnostic pop -#endif - - soup_message_set_flags(msg, SOUP_MESSAGE_NO_REDIRECT); - - soup_message_headers_append(msg->request_headers, "User-Agent", - "Music Player Daemon " VERSION); - - g_signal_connect(msg, "got-headers", - G_CALLBACK(input_soup_got_headers), this); - g_signal_connect(msg, "got-chunk", - G_CALLBACK(input_soup_got_chunk), this); - g_signal_connect(msg, "got-body", - G_CALLBACK(input_soup_got_body), this); - - io_thread_call(input_soup_queue, this); -} - -static struct input_stream * -input_soup_open(const char *uri, - Mutex &mutex, Cond &cond, - G_GNUC_UNUSED GError **error_r) -{ - if (strncmp(uri, "http://", 7) != 0) - return NULL; - - SoupInputStream *s = new SoupInputStream(uri, mutex, cond); - return &s->base; -} - -static gpointer -input_soup_cancel(gpointer data) -{ - SoupInputStream *s = (SoupInputStream *)data; - - if (!s->completed) - soup_session_cancel_message(soup_session, s->msg, - SOUP_STATUS_CANCELLED); - - return NULL; -} - -SoupInputStream::~SoupInputStream() -{ - base.mutex.lock(); - - if (!completed) { - /* the messages's session callback hasn't been invoked - yet; cancel it and wait for completion */ - - base.mutex.unlock(); - - io_thread_call(input_soup_cancel, this); - - base.mutex.lock(); - while (!completed) - base.cond.wait(base.mutex); - } - - base.mutex.unlock(); - - SoupBuffer *buffer; - while ((buffer = (SoupBuffer *)g_queue_pop_head(buffers)) != NULL) - soup_buffer_free(buffer); - g_queue_free(buffers); - - if (postponed_error != NULL) - g_error_free(postponed_error); -} - -static void -input_soup_close(struct input_stream *is) -{ - SoupInputStream *s = (SoupInputStream *)is; - - delete s; -} - -static bool -input_soup_check(struct input_stream *is, GError **error_r) -{ - SoupInputStream *s = (SoupInputStream *)is; - - bool success = s->postponed_error == NULL; - if (!success) { - g_propagate_error(error_r, s->postponed_error); - s->postponed_error = NULL; - } - - return success; -} - -static bool -input_soup_available(struct input_stream *is) -{ - SoupInputStream *s = (SoupInputStream *)is; - - return s->eof || !s->alive || !g_queue_is_empty(s->buffers); -} - -inline size_t -SoupInputStream::Read(void *ptr, size_t size, GError **error_r) -{ - if (!WaitData()) { - assert(!alive); - - if (postponed_error != nullptr) { - g_propagate_error(error_r, postponed_error); - postponed_error = nullptr; - } else - g_set_error_literal(error_r, soup_quark(), 0, - "HTTP failure"); - return 0; - } - - char *p0 = (char *)ptr, *p = p0, *p_end = p0 + size; - - while (p < p_end) { - SoupBuffer *buffer = (SoupBuffer *) - g_queue_pop_head(buffers); - if (buffer == NULL) { - assert(current_consumed == 0); - break; - } - - assert(current_consumed < buffer->length); - assert(total_buffered >= buffer->length); - - const char *q = buffer->data; - q += current_consumed; - - size_t remaining = buffer->length - current_consumed; - size_t nbytes = p_end - p; - if (nbytes > remaining) - nbytes = remaining; - - memcpy(p, q, nbytes); - p += nbytes; - - current_consumed += remaining; - if (current_consumed >= buffer->length) { - /* done with this buffer */ - total_buffered -= buffer->length; - soup_buffer_free(buffer); - current_consumed = 0; - } else { - /* partial read */ - assert(p == p_end); - - g_queue_push_head(buffers, buffer); - } - } - - if (pause && total_buffered < SOUP_RESUME_AT) { - pause = false; - soup_session_unpause_message(soup_session, msg); - } - - size_t nbytes = p - p0; - base.offset += nbytes; - - return nbytes; -} - -static size_t -input_soup_read(struct input_stream *is, void *ptr, size_t size, - GError **error_r) -{ - SoupInputStream *s = (SoupInputStream *)is; - - return s->Read(ptr, size, error_r); -} - -static bool -input_soup_eof(G_GNUC_UNUSED struct input_stream *is) -{ - SoupInputStream *s = (SoupInputStream *)is; - - return !s->alive && g_queue_is_empty(s->buffers); -} - -const struct input_plugin input_plugin_soup = { - "soup", - input_soup_init, - input_soup_finish, - input_soup_open, - input_soup_close, - input_soup_check, - nullptr, - nullptr, - input_soup_available, - input_soup_read, - input_soup_eof, - nullptr, -}; 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