c08a8581ee
The current http output doesn't provide a header for cross-origin support. This prevents to use the mpd http stream directly from an other webapplication due the origin from the webpage differs from then the audio stream. The fix is to add the following header to the http response: Access-Control-Allow-Origin: *
120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "IcyMetaDataServer.hxx"
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#include "tag/Tag.hxx"
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#include "util/FormatString.hxx"
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#include "util/AllocatedString.hxx"
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#include "util/TruncateString.hxx"
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#include <iterator>
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#include <string.h>
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AllocatedString
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icy_server_metadata_header(const char *name,
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const char *genre, const char *url,
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const char *content_type, int metaint) noexcept
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{
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return FormatString("HTTP/1.1 200 OK\r\n"
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"icy-notice1:<BR>This stream requires an audio player!<BR>\r\n" /* TODO */
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"icy-notice2:MPD - The music player daemon<BR>\r\n"
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"icy-name: %s\r\n" /* TODO */
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"icy-genre: %s\r\n" /* TODO */
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"icy-url: %s\r\n" /* TODO */
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"icy-pub:1\r\n"
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"icy-metaint:%d\r\n"
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/* TODO "icy-br:%d\r\n" */
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"Content-Type: %s\r\n"
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"Connection: close\r\n"
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"Pragma: no-cache\r\n"
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"Cache-Control: no-cache, no-store\r\n"
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"Access-Control-Allow-Origin: *\r\n"
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"\r\n",
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name,
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genre,
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url,
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metaint,
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/* bitrate, */
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content_type);
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}
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static AllocatedString
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icy_server_metadata_string(const char *stream_title,
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const char* stream_url) noexcept
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{
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// The leading n is a placeholder for the length information
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auto icy_metadata = FormatString("nStreamTitle='%s';"
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"StreamUrl='%s';"
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/* pad 15 spaces just in case
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the length needs to be
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rounded up */
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" ",
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stream_title,
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stream_url);
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size_t meta_length = strlen(icy_metadata.c_str());
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meta_length--; // subtract placeholder
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meta_length = meta_length / 16;
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icy_metadata[0] = meta_length;
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if (meta_length > 255)
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return nullptr;
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return icy_metadata;
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}
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PagePtr
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icy_server_metadata_page(const Tag &tag, const TagType *types) noexcept
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{
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const char *tag_items[TAG_NUM_OF_ITEM_TYPES];
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int last_item = -1;
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while (*types != TAG_NUM_OF_ITEM_TYPES) {
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const char *tag_item = tag.GetValue(*types++);
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if (tag_item)
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tag_items[++last_item] = tag_item;
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}
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int item = 0;
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// Length + Metadata - "StreamTitle='';StreamUrl='';" = 4081 - 28
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char stream_title[(1 + 255 - 28) * 16];
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char *p = stream_title, *const end = stream_title + std::size(stream_title);
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stream_title[0] = '\0';
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while (p < end && item <= last_item) {
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p = CopyTruncateString(p, tag_items[item++], end - p);
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if (item <= last_item)
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p = CopyTruncateString(p, " - ", end - p);
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}
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const auto icy_string = icy_server_metadata_string(stream_title, "");
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if (icy_string == nullptr)
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return nullptr;
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return std::make_shared<Page>(icy_string.c_str(),
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uint8_t(icy_string[0]) * 16 + 1);
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}
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