194 lines
7.9 KiB
C
194 lines
7.9 KiB
C
/*
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* Bonjour strings manager. This file is part of Shairport Sync.
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* Copyright (c) Mike Brady 2014--2025
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "bonjour_strings.h"
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#include "common.h"
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char *txt_records[128];
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char *secondary_txt_records[128];
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// mDNS advertisement strings
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// Create these strings and then keep them updated.
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// When necessary, update the mDNS service records, using e.g. Avahi
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// from these sources.
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char fwString[128];
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char ap1_featuresString[128];
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char ap1StatusFlagsString[128];
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char ap1ModelString[128];
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char ap1SrcversString[128];
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char pkString[128];
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#ifdef CONFIG_AIRPLAY_2
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char deviceIdString[128];
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char featuresString[128];
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char statusflagsString[128];
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char piString[128];
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char gidString[128];
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char psiString[128];
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char fexString[128];
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char modelString[128];
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char srcversString[128];
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char osversString[128];
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char ap1OsversString[128];
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#endif
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#ifdef CONFIG_AIRPLAY_2
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void build_bonjour_strings(rtsp_conn_info *conn) {
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#else
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void build_bonjour_strings(__attribute((unused)) rtsp_conn_info *conn) {
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#endif
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// Watch out here, the strings that form each entry
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// need to be permanent, because we don't know
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// when avahi will look at them.
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// bnprintf is (should be) the same as snprintf except that it returns a pointer to the resulting
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// character string. so this rather odd arranement below allows you to use a snprintf for
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// convenience but get the character string as a result, both as a store for the item so that
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// Avahi can see it in future and as a pointer
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int entry_number = 0;
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// the txt_records entries are for the _raop._tcp characteristics
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// the secondary_txt_records are for the _airplay._tcp items.
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#ifdef CONFIG_AIRPLAY_2
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txt_records[entry_number++] = "cn=0,1";
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txt_records[entry_number++] = "da=true";
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txt_records[entry_number++] = "et=0,1";
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uint64_t features_hi = config.airplay_features;
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features_hi = (features_hi >> 32) & 0xffffffff;
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uint64_t features_lo = config.airplay_features;
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features_lo = features_lo & 0xffffffff;
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txt_records[entry_number++] =
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bnprintf(ap1_featuresString, sizeof(ap1_featuresString), "ft=0x%" PRIX64 ",0x%" PRIX64 "",
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features_lo, features_hi);
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txt_records[entry_number++] =
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bnprintf(fwString, sizeof(fwString), "fv=%s", config.firmware_version);
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txt_records[entry_number++] = bnprintf(ap1StatusFlagsString, sizeof(ap1StatusFlagsString),
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"sf=0x%" PRIX32, config.airplay_statusflags);
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#ifdef CONFIG_METADATA
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if (config.get_coverart == 0)
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txt_records[entry_number++] = "md=0,2";
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else
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txt_records[entry_number++] = "md=0,1,2";
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#endif
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txt_records[entry_number++] =
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bnprintf(ap1ModelString, sizeof(ap1ModelString), "am=%s", config.model);
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txt_records[entry_number++] = bnprintf(pkString, sizeof(pkString), "pk=%s", config.pk_string);
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txt_records[entry_number++] = "tp=UDP";
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txt_records[entry_number++] = "vn=65537";
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txt_records[entry_number++] =
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bnprintf(ap1SrcversString, sizeof(ap1SrcversString), "vs=%s", config.srcvers);
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txt_records[entry_number++] =
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bnprintf(ap1OsversString, sizeof(ap1OsversString), "ov=%s", config.osvers);
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txt_records[entry_number++] = NULL;
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#else
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// here, just replicate what happens in mdns.h when using those #defines
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txt_records[entry_number++] =
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bnprintf(ap1StatusFlagsString, sizeof(ap1StatusFlagsString), "sf=0x4");
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txt_records[entry_number++] =
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bnprintf(fwString, sizeof(fwString), "fv=%s", config.firmware_version);
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txt_records[entry_number++] =
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bnprintf(ap1ModelString, sizeof(ap1ModelString), "am=%s", config.model);
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txt_records[entry_number++] = bnprintf(ap1SrcversString, sizeof(ap1SrcversString), "vs=105.1");
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txt_records[entry_number++] = "tp=TCP,UDP";
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txt_records[entry_number++] = "vn=65537";
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#ifdef CONFIG_METADATA
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if (config.get_coverart == 0)
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txt_records[entry_number++] = "md=0,2";
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else
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txt_records[entry_number++] = "md=0,1,2";
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#endif
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txt_records[entry_number++] = "ss=16";
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txt_records[entry_number++] = "sr=44100";
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txt_records[entry_number++] = "da=true";
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txt_records[entry_number++] = "sv=false";
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txt_records[entry_number++] = "et=0,1";
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txt_records[entry_number++] = "ek=1";
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txt_records[entry_number++] = "cn=0,1";
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txt_records[entry_number++] = "ch=2";
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txt_records[entry_number++] = "txtvers=1";
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if (config.password == NULL)
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txt_records[entry_number++] = "pw=false";
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else
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txt_records[entry_number++] = "pw=true";
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txt_records[entry_number++] = NULL;
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#endif
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#ifdef CONFIG_AIRPLAY_2
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// make up a secondary set of text records
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entry_number = 0;
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secondary_txt_records[entry_number++] = "acl=0";
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secondary_txt_records[entry_number++] = "btaddr=00:00:00:00:00:00";
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secondary_txt_records[entry_number++] =
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bnprintf(deviceIdString, sizeof(deviceIdString), "deviceid=%s", config.airplay_device_id);
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secondary_txt_records[entry_number++] =
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bnprintf(fexString, sizeof(fexString), "fex=%s", config.airplay_fex);
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secondary_txt_records[entry_number++] =
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bnprintf(featuresString, sizeof(featuresString), "features=0x%" PRIX64 ",0x%" PRIX64 "",
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features_lo, features_hi); // features_hi and features_lo already calculated.
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secondary_txt_records[entry_number++] = bnprintf(statusflagsString, sizeof(statusflagsString),
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"flags=0x%" PRIX32, config.airplay_statusflags);
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if ((conn != NULL) && (conn->airplay_gid != 0)) {
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snprintf(gidString, sizeof(gidString), "gid=%s", conn->airplay_gid);
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} else {
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snprintf(gidString, sizeof(gidString), "gid=%s", config.airplay_pi);
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}
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secondary_txt_records[entry_number++] = gidString;
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if ((conn != NULL) && (conn->groupContainsGroupLeader != 0)) {
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secondary_txt_records[entry_number++] = "igl=0";
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secondary_txt_records[entry_number++] = "gcgl=1";
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} else {
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secondary_txt_records[entry_number++] = "igl=0";
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secondary_txt_records[entry_number++] = "gcgl=0";
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}
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// if ((conn != NULL) && (conn->airplay_gid != 0)) // if it's in a group
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// secondary_txt_records[entry_number++] = "isGroupLeader=0";
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secondary_txt_records[entry_number++] =
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bnprintf(modelString, sizeof(modelString), "model=%s", config.model);
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secondary_txt_records[entry_number++] = "protovers=1.1";
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secondary_txt_records[entry_number++] =
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bnprintf(piString, sizeof(piString), "pi=%s", config.airplay_pi);
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secondary_txt_records[entry_number++] =
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bnprintf(psiString, sizeof(psiString), "psi=%s", config.airplay_psi);
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secondary_txt_records[entry_number++] = pkString; // already calculated
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secondary_txt_records[entry_number++] =
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bnprintf(srcversString, sizeof(srcversString), "srcvers=%s", config.srcvers);
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secondary_txt_records[entry_number++] =
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bnprintf(osversString, sizeof(osversString), "osvers=%s", config.osvers);
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secondary_txt_records[entry_number++] = "vv=2";
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secondary_txt_records[entry_number++] = fwString; // already calculated
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secondary_txt_records[entry_number++] = NULL;
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#endif
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}
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