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owntone-server/src/httpd_daap.c

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/*
* Copyright (C) 2016-2018 Espen Jürgensen <espenjurgensen@gmail.com>
* Copyright (C) 2009-2011 Julien BLACHE <jb@jblache.org>
* Copyright (C) 2010 Kai Elwert <elwertk@googlemail.com>
*
* Adapted from mt-daapd:
* Copyright (C) 2003-2007 Ron Pedde <ron@pedde.com>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <errno.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <limits.h>
#include <stdint.h>
#include <inttypes.h>
#include <time.h>
#include <ctype.h>
#include <uninorm.h>
#include <unistd.h>
#include <event2/event.h>
#include "httpd_internal.h"
#include "httpd_daap.h"
#include "logger.h"
#include "db.h"
#include "conffile.h"
#include "misc.h"
#include "transcode.h"
#include "artwork.h"
#include "dmap_common.h"
#include "cache.h"
/* Max number of sessions and session timeout
* Many clients (including iTunes) don't seem to respect the timeout capability
* that we announce, and just keep using the same session. Therefore we take a
* lenient approach to actually timing out: We wait an entire week, and to
* avoid running a timer for that long, we only check for expiration when adding
* new sessions - see daap_session_cleanup().
*/
#define DAAP_SESSION_MAX 200
#define DAAP_SESSION_TIMEOUT 604800 // One week in seconds
/* We announce this timeout to the client when returning server capabilities */
#define DAAP_SESSION_TIMEOUT_CAPABILITY 1800 // 30 minutes
/* Update requests refresh interval in seconds */
#define DAAP_UPDATE_REFRESH 0
/* Database number for the Radio item */
#define DAAP_DB_RADIO 2
/* Errors that the reply handlers may return */
enum daap_reply_result
{
DAAP_REPLY_LOGOUT = 4,
DAAP_REPLY_NONE = 3,
DAAP_REPLY_NO_CONTENT = 2,
DAAP_REPLY_OK_NO_GZIP = 1,
DAAP_REPLY_OK = 0,
DAAP_REPLY_NO_CONNECTION = -1,
DAAP_REPLY_ERROR = -2,
DAAP_REPLY_FORBIDDEN = -3,
DAAP_REPLY_BAD_REQUEST = -4,
DAAP_REPLY_SERVUNAVAIL = -5,
};
struct daap_session {
int id;
time_t mtime;
bool is_remote;
struct daap_session *next;
};
struct daap_update_request {
struct httpd_request *hreq;
/* Refresh tiemout */
struct event *timeout;
struct daap_update_request *next;
};
struct sort_ctx {
struct evbuffer *headerlist;
int16_t mshc;
uint32_t mshi;
uint32_t mshn;
uint32_t misc_mshn;
};
/* Default meta tags if not provided in the query */
static char *default_meta_plsongs = "dmap.itemkind,dmap.itemid,dmap.itemname,dmap.containeritemid,dmap.parentcontainerid";
static char *default_meta_pl = "dmap.itemid,dmap.itemname,dmap.persistentid,com.apple.itunes.smart-playlist";
static char *default_meta_group = "dmap.itemname,dmap.persistentid,daap.songalbumartist";
/* DAAP session tracking */
static struct daap_session *daap_sessions;
/* Update requests */
static int current_rev;
static struct daap_update_request *update_requests;
static struct timeval daap_update_refresh_tv = { DAAP_UPDATE_REFRESH, 0 };
/* -------------------------- SESSION HANDLING ------------------------------ */
static void
daap_session_free(struct daap_session *s)
{
free(s);
}
static void
daap_session_remove(struct daap_session *s)
{
struct daap_session *ptr;
struct daap_session *prev;
prev = NULL;
for (ptr = daap_sessions; ptr; ptr = ptr->next)
{
if (ptr == s)
break;
prev = ptr;
}
if (!ptr)
{
DPRINTF(E_LOG, L_DAAP, "Error: Request to remove non-existent or ad-hoc session. BUG!\n");
return;
}
if (!prev)
daap_sessions = s->next;
else
prev->next = s->next;
daap_session_free(s);
}
static struct daap_session *
daap_session_get(int id)
{
struct daap_session *s;
for (s = daap_sessions; s; s = s->next)
{
if (id == s->id)
return s;
}
return NULL;
}
/* Removes stale sessions and also drops the oldest sessions if DAAP_SESSION_MAX
* will otherwise be exceeded
*/
static void
daap_session_cleanup(void)
{
struct daap_session *s;
struct daap_session *next;
time_t now;
int count;
count = 0;
now = time(NULL);
for (s = daap_sessions; s; s = next)
{
count++;
next = s->next;
if ((difftime(now, s->mtime) > DAAP_SESSION_TIMEOUT) || (count > DAAP_SESSION_MAX))
{
DPRINTF(E_LOG, L_DAAP, "Cleaning up DAAP session (id %d)\n", s->id);
daap_session_remove(s);
}
}
}
static struct daap_session *
daap_session_add(bool is_remote, int request_session_id)
{
struct daap_session *s;
daap_session_cleanup();
CHECK_NULL(L_DAAP, s = calloc(1, sizeof(struct daap_session)));
if (request_session_id)
{
if (daap_session_get(request_session_id))
{
DPRINTF(E_LOG, L_DAAP, "Session id requested in login (%d) is not available\n", request_session_id);
free(s);
return NULL;
}
s->id = request_session_id;
}
else
{
while ( (s->id = rand() + 100) && daap_session_get(s->id) );
}
s->mtime = time(NULL);
s->is_remote = is_remote;
if (daap_sessions)
s->next = daap_sessions;
daap_sessions = s;
return s;
}
/* ---------------------- UPDATE REQUESTS HANDLERS -------------------------- */
static void
update_free(struct daap_update_request *ur)
{
if (!ur)
return;
if (ur->timeout)
event_free(ur->timeout);
free(ur);
}
static void
update_remove(struct daap_update_request *ur)
{
struct daap_update_request *p;
if (ur == update_requests)
update_requests = ur->next;
else
{
for (p = update_requests; p && (p->next != ur); p = p->next)
;
if (!p)
{
DPRINTF(E_LOG, L_DAAP, "WARNING: struct daap_update_request not found in list; BUG!\n");
return;
}
p->next = ur->next;
}
update_free(ur);
}
static void
update_refresh_cb(int fd, short event, void *arg)
{
struct daap_update_request *ur = arg;
struct httpd_request *hreq = ur->hreq;
current_rev++;
/* Send back current revision */
dmap_add_container(hreq->out_body, "mupd", 24);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_int(hreq->out_body, "musr", current_rev); /* 12 */
httpd_send_reply(hreq, HTTP_OK, "OK", 0);
update_remove(ur);
}
static void
update_fail_cb(void *arg)
{
struct daap_update_request *ur = arg;
DPRINTF(E_DBG, L_DAAP, "Update request: client closed connection\n");
update_remove(ur);
}
/* ------------------------- SORT HEADERS HELPERS --------------------------- */
static struct sort_ctx *
daap_sort_context_new(void)
{
struct sort_ctx *ctx;
int ret;
ctx = calloc(1, sizeof(struct sort_ctx));
if (!ctx)
{
DPRINTF(E_LOG, L_DAAP, "Out of memory for sorting context\n");
return NULL;
}
memset(ctx, 0, sizeof(struct sort_ctx));
ctx->headerlist = evbuffer_new();
if (!ctx->headerlist)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DAAP sort headers list\n");
free(ctx);
return NULL;
}
ret = evbuffer_expand(ctx->headerlist, 512);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP sort headers list\n");
evbuffer_free(ctx->headerlist);
free(ctx);
return NULL;
}
ctx->mshc = -1;
return ctx;
}
static void
daap_sort_context_free(struct sort_ctx *ctx)
{
evbuffer_free(ctx->headerlist);
free(ctx);
}
static int
daap_sort_build(struct sort_ctx *ctx, char *str)
{
uint8_t *ret;
size_t len;
char fl;
len = strlen(str);
if (len > 0)
{
ret = u8_normalize(UNINORM_NFD, (uint8_t *)str, len + 1, NULL, &len);
if (!ret)
{
DPRINTF(E_LOG, L_DAAP, "Could not normalize string for sort header\n");
return -1;
}
fl = ret[0];
free(ret);
}
else
fl = 0;
if (isascii(fl) && isalpha(fl))
{
fl = toupper(fl);
/* Init */
if (ctx->mshc == -1)
ctx->mshc = fl;
if (fl == ctx->mshc)
ctx->mshn++;
else
{
dmap_add_container(ctx->headerlist, "mlit", 34);
dmap_add_short(ctx->headerlist, "mshc", ctx->mshc); /* 10 */
dmap_add_int(ctx->headerlist, "mshi", ctx->mshi); /* 12 */
dmap_add_int(ctx->headerlist, "mshn", ctx->mshn); /* 12 */
DPRINTF(E_DBG, L_DAAP, "Added sort header: mshc = %c, mshi = %u, mshn = %u fl %c\n", ctx->mshc, ctx->mshi, ctx->mshn, fl);
ctx->mshi = ctx->mshi + ctx->mshn;
ctx->mshn = 1;
ctx->mshc = fl;
}
}
else
{
/* Non-ASCII, goes to misc category */
ctx->misc_mshn++;
}
return 0;
}
static void
daap_sort_finalize(struct sort_ctx *ctx)
{
/* Add current entry, if any */
if (ctx->mshc != -1)
{
dmap_add_container(ctx->headerlist, "mlit", 34);
dmap_add_short(ctx->headerlist, "mshc", ctx->mshc); /* 10 */
dmap_add_int(ctx->headerlist, "mshi", ctx->mshi); /* 12 */
dmap_add_int(ctx->headerlist, "mshn", ctx->mshn); /* 12 */
ctx->mshi = ctx->mshi + ctx->mshn;
DPRINTF(E_DBG, L_DAAP, "Added sort header: mshc = %c, mshi = %u, mshn = %u (final)\n", ctx->mshc, ctx->mshi, ctx->mshn);
}
/* Add misc category */
dmap_add_container(ctx->headerlist, "mlit", 34);
dmap_add_short(ctx->headerlist, "mshc", '0'); /* 10 */
dmap_add_int(ctx->headerlist, "mshi", ctx->mshi); /* 12 */
dmap_add_int(ctx->headerlist, "mshn", ctx->misc_mshn); /* 12 */
}
/* ----------------------------- OTHER HELPERS ------------------------------ */
/* We try not to return items that the client cannot play (like Spotify and
* internet streams in iTunes), or which are inappropriate (like internet streams
* in the album tab of remotes). Note that the function must never append a
* filter if the SELECT is not from the files table.
*/
static void
user_agent_filter(struct query_params *qp, struct httpd_request *hreq)
{
struct daap_session *s = hreq->extra_data;
char *filter;
if (s->is_remote)
{
// This makes sure 1) the SELECT is from files, 2) that the Remote query
// contained extended_media_kind:1, which characterise the queries we want
// to filter. TODO: Not a really nice way of doing this, but best I could
// think of.
if (!qp->filter || !strstr(qp->filter, "f.media_kind = 1"))
return;
filter = safe_asprintf("%s AND (f.data_kind <> %d)", qp->filter, DATA_KIND_HTTP);
}
else
{
if (qp->type != Q_ITEMS)
return;
if (qp->filter)
filter = safe_asprintf("%s AND (f.data_kind = %d)", qp->filter, DATA_KIND_FILE);
else
filter = safe_asprintf("(f.data_kind = %d)", DATA_KIND_FILE);
}
free(qp->filter);
qp->filter = filter;
DPRINTF(E_DBG, L_DAAP, "SQL filter w/client mod: %s\n", qp->filter);
}
static void
query_params_set(struct query_params *qp, int *sort_headers, struct httpd_request *hreq, enum query_type type)
{
const char *param;
char *ptr;
int low;
int high;
int ret;
low = 0;
high = -1; /* No limit */
memset(qp, 0, sizeof(struct query_params));
param = httpd_query_value_find(hreq->query, "index");
if (param)
{
if (param[0] == '-') /* -n, last n entries */
DPRINTF(E_LOG, L_DAAP, "Unsupported index range: %s\n", param);
else
{
ret = safe_atoi32(param, &low);
if (ret < 0)
DPRINTF(E_LOG, L_DAAP, "Could not parse index range: %s\n", param);
else
{
ptr = strchr(param, '-');
if (!ptr) /* single item */
high = low;
else
{
ptr++;
if (*ptr != '\0') /* low-high */
{
ret = safe_atoi32(ptr, &high);
if (ret < 0)
DPRINTF(E_LOG, L_DAAP, "Could not parse high index in range: %s\n", param);
}
}
}
}
DPRINTF(E_DBG, L_DAAP, "Index range %s: low %d, high %d (offset %d, limit %d)\n", param, low, high, qp->offset, qp->limit);
}
if (high < low)
high = -1; /* No limit */
qp->offset = low;
if (high < 0)
qp->limit = -1; /* No limit */
else
qp->limit = (high - low) + 1;
if (qp->limit == -1 && qp->offset == 0)
qp->idx_type = I_NONE;
else
qp->idx_type = I_SUB;
qp->sort = S_NONE;
param = httpd_query_value_find(hreq->query, "sort");
if (param)
{
if (strcmp(param, "name") == 0)
qp->sort = S_NAME;
else if (strcmp(param, "album") == 0 && (type != Q_BROWSE_ALBUMS)) // Only set if non-default sort requested
qp->sort = S_ALBUM;
else if (strcmp(param, "artist") == 0 && (type != Q_BROWSE_ARTISTS)) // Only set if non-default sort requested
qp->sort = S_ARTIST;
else if (strcmp(param, "releasedate") == 0)
qp->sort = S_DATE_RELEASED;
else
DPRINTF(E_DBG, L_DAAP, "Unknown sort param: %s\n", param);
if (qp->sort != S_NONE)
DPRINTF(E_DBG, L_DAAP, "Sorting songlist by %s\n", param);
}
if (sort_headers)
{
*sort_headers = 0;
param = httpd_query_value_find(hreq->query, "include-sort-headers");
if (param && (strcmp(param, "1") == 0))
{
*sort_headers = 1;
DPRINTF(E_SPAM, L_DAAP, "Sort headers requested\n");
}
}
param = httpd_query_value_find(hreq->query, "query");
if (!param)
param = httpd_query_value_find(hreq->query, "filter");
if (param)
{
DPRINTF(E_DBG, L_DAAP, "DAAP browse query filter: %s\n", param);
qp->filter = dmap_query_parse_sql(param);
if (!qp->filter)
DPRINTF(E_LOG, L_DAAP, "Ignoring improper DAAP query: %s\n", param);
/* iTunes seems to default to this when there is a query (which there is for audiobooks, but not for normal playlists) */
if (!qp->sort && !(type & Q_F_BROWSE))
qp->sort = S_ALBUM;
}
qp->type = type;
user_agent_filter(qp, hreq);
}
static int
parse_meta(const struct dmap_field ***out_meta, const char *param)
{
const struct dmap_field **meta;
char *ptr;
char *field;
char *metastr;
int nmeta;
int i;
int n;
CHECK_NULL(L_DAAP, metastr = strdup(param));
nmeta = 1;
ptr = metastr;
while ((ptr = strchr(ptr + 1, ',')) && (strlen(ptr) > 1))
nmeta++;
DPRINTF(E_DBG, L_DAAP, "Asking for %d meta tags\n", nmeta);
CHECK_NULL(L_DAAP, meta = calloc(nmeta, sizeof(const struct dmap_field *)));
field = strtok_r(metastr, ",", &ptr);
for (i = 0; field != NULL && i < nmeta; i++)
{
for (n = 0; (n < i) && (strcmp(field, meta[n]->desc) != 0); n++);
if (n == i)
{
meta[i] = dmap_find_field_wrapper(field, strlen(field));
if (!meta[i])
{
DPRINTF(E_WARN, L_DAAP, "Could not find requested meta field '%s'\n", field);
i--;
nmeta--;
}
}
else
{
DPRINTF(E_WARN, L_DAAP, "Parser will ignore duplicate occurrence of meta field '%s'\n", field);
i--;
nmeta--;
}
field = strtok_r(NULL, ",", &ptr);
}
free(metastr);
DPRINTF(E_DBG, L_DAAP, "Found %d meta tags\n", nmeta);
*out_meta = meta;
return nmeta;
}
static void
daap_reply_send(struct httpd_request *hreq, enum daap_reply_result result)
{
switch (result)
{
case DAAP_REPLY_LOGOUT:
httpd_send_reply(hreq, HTTP_NOCONTENT, "Logout Successful", 0);
break;
case DAAP_REPLY_NO_CONTENT:
httpd_send_reply(hreq, HTTP_NOCONTENT, "No Content", HTTPD_SEND_NO_GZIP);
break;
case DAAP_REPLY_OK:
httpd_send_reply(hreq, HTTP_OK, "OK", 0);
break;
case DAAP_REPLY_OK_NO_GZIP:
case DAAP_REPLY_ERROR:
httpd_send_reply(hreq, HTTP_OK, "OK", HTTPD_SEND_NO_GZIP);
break;
case DAAP_REPLY_FORBIDDEN:
httpd_send_error(hreq, HTTP_FORBIDDEN, "Forbidden");
break;
case DAAP_REPLY_BAD_REQUEST:
httpd_send_error(hreq, HTTP_BADREQUEST, "Bad Request");
break;
case DAAP_REPLY_SERVUNAVAIL:
httpd_send_error(hreq, HTTP_SERVUNAVAIL, "Internal Server Error");
break;
case DAAP_REPLY_NO_CONNECTION:
case DAAP_REPLY_NONE:
// Send nothing
break;
}
}
static int
daap_request_authorize(struct httpd_request *hreq)
{
struct daap_session *session = hreq->extra_data;
const char *param;
char *passwd;
int ret;
if (net_peer_address_is_trusted(hreq->peer_address))
return 0;
// Regular DAAP clients like iTunes will login with /login, and we will reply
// with httpd_basic_auth() if a library password is set. Remote clients will
// also call /login, but they should not get a httpd_basic_auth(), instead
// daap_reply_login() will take care of auth.
if (session->is_remote && (strcmp(hreq->path, "/login") == 0))
return 0;
param = httpd_query_value_find(hreq->query, "session-id");
if (param)
{
if (session->id == 0)
{
DPRINTF(E_LOG, L_DAAP, "Unauthorized request from '%s', DAAP session not found: '%s'\n", hreq->peer_address, hreq->uri);
httpd_send_error(hreq, HTTP_UNAUTHORIZED, "Unauthorized");;
return -1;
}
session->mtime = time(NULL);
return 0;
}
passwd = cfg_getstr(cfg_getsec(cfg, "library"), "password");
if (!passwd)
return 0;
// If no valid session then we may need to authenticate
if ((strcmp(hreq->path, "/server-info") == 0)
|| (strcmp(hreq->path, "/logout") == 0)
|| (strcmp(hreq->path, "/content-codes") == 0)
|| (strncmp(hreq->path, "/databases/1/items/", strlen("/databases/1/items/")) == 0))
return 0; // No authentication
DPRINTF(E_DBG, L_DAAP, "Checking authentication for library\n");
// We don't care about the username
ret = httpd_basic_auth(hreq, NULL, passwd, cfg_getstr(cfg_getsec(cfg, "library"), "name"));
if (ret != 0)
{
DPRINTF(E_LOG, L_DAAP, "Unsuccessful library authorization attempt from '%s'\n", hreq->peer_address);
return -1;
}
return 0;
}
/* --------------------------- REPLY HANDLERS ------------------------------- */
/* Note that some handlers can be called without a connection (needed for */
/* cache regeneration), while others cannot. Those that cannot should check */
/* that hreq->backend is not null. */
static enum daap_reply_result
daap_reply_server_info(struct httpd_request *hreq)
{
struct evbuffer *content;
char *name;
char *passwd;
const char *clientver;
size_t len;
int mpro;
int apro;
if (!hreq->backend)
{
DPRINTF(E_LOG, L_DAAP, "Bug! daap_reply_server_info() cannot be called without an actual connection\n");
return DAAP_REPLY_NO_CONNECTION;
}
passwd = cfg_getstr(cfg_getsec(cfg, "library"), "password");
name = cfg_getstr(cfg_getsec(cfg, "library"), "name");
CHECK_NULL(L_DAAP, content = evbuffer_new());
CHECK_ERR(L_DAAP, evbuffer_expand(content, 512));
mpro = 2 << 16 | 10;
apro = 3 << 16 | 12;
if (hreq->in_headers && (clientver = httpd_header_find(hreq->in_headers, "Client-DAAP-Version")))
{
if (strcmp(clientver, "1.0") == 0)
{
mpro = 1 << 16;
apro = 1 << 16;
}
else if (strcmp(clientver, "2.0") == 0)
{
mpro = 1 << 16;
apro = 2 << 16;
}
}
dmap_add_int(content, "mstt", 200);
dmap_add_int(content, "mpro", mpro); // dmap.protocolversion
dmap_add_string(content, "minm", name); // dmap.itemname (server name)
dmap_add_int(content, "apro", apro); // daap.protocolversion
dmap_add_int(content, "aeSV", apro); // com.apple.itunes.music-sharing-version (determines if itunes shows share types)
dmap_add_short(content, "ated", 7); // daap.supportsextradata
// Sub-optimal user-agent sniffing to solve the problem that iTunes 12.1 and
// Apple Music do not work if we announce support for groups
if (hreq->user_agent && (strncmp(hreq->user_agent, "iTunes", strlen("iTunes")) == 0))
dmap_add_short(content, "asgr", 0); // daap.supportsgroups (1=artists, 2=albums, 3=both)
else if (hreq->user_agent && (strncmp(hreq->user_agent, "Music", strlen("Music")) == 0))
dmap_add_short(content, "asgr", 0); // daap.supportsgroups (1=artists, 2=albums, 3=both)
else
dmap_add_short(content, "asgr", 3); // daap.supportsgroups (1=artists, 2=albums, 3=both)
// dmap_add_long(content, "asse", 0x80000); // unknown - used by iTunes
dmap_add_char(content, "aeMQ", 1); // unknown - used by iTunes
// dmap_add_long(content, "mscu", ); // unknown - used by iTunes
// dmap_add_char(content, "aeFR", ); // unknown - used by iTunes
dmap_add_char(content, "aeTr", 1); // unknown - used by iTunes
dmap_add_char(content, "aeSL", 1); // unknown - used by iTunes
dmap_add_char(content, "aeSR", 1); // unknown - used by iTunes
// dmap_add_char(content, "aeFP", 2); // triggers FairPlay request
// dmap_add_long(content, "aeSX", ); // unknown - used by iTunes
// dmap_add_int(content, "ppro", ); // dpap.protocolversion
dmap_add_char(content, "msed", 0); // dmap.supportsedit? - we don't support playlist editing
dmap_add_char(content, "mslr", 1); // dmap.loginrequired
dmap_add_int(content, "mstm", DAAP_SESSION_TIMEOUT_CAPABILITY); // dmap.timeoutinterval
dmap_add_char(content, "msal", 1); // dmap.supportsautologout
// dmap_add_char(content, "msas", 3); // dmap.authenticationschemes
dmap_add_char(content, "msau", (passwd) ? 2 : 0); // dmap.authenticationmethod
dmap_add_char(content, "msup", 1); // dmap.supportsupdate
dmap_add_char(content, "mspi", 1); // dmap.supportspersistentids
dmap_add_char(content, "msex", 1); // dmap.supportsextensions
dmap_add_char(content, "msbr", 1); // dmap.supportsbrowse
dmap_add_char(content, "msqy", 1); // dmap.supportsquery
dmap_add_char(content, "msix", 1); // dmap.supportsindex
// dmap_add_char(content, "msrs", 1); // dmap.supportsresolve
dmap_add_int(content, "msdc", 2); // dmap.databasescount
// dmap_add_int(content, "mstc", ); // dmap.utctime
// dmap_add_int(content, "msto", ); // dmap.utcoffset
// Create container
len = evbuffer_get_length(content);
dmap_add_container(hreq->out_body, "msrv", len);
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, content));
evbuffer_free(content);
return DAAP_REPLY_OK;
}
static enum daap_reply_result
daap_reply_content_codes(struct httpd_request *hreq)
{
const struct dmap_field *dmap_fields;
size_t len;
int nfields;
int i;
dmap_fields = dmap_get_fields_table(&nfields);
len = 12;
for (i = 0; i < nfields; i++)
len += 8 + 12 + 10 + 8 + strlen(dmap_fields[i].desc);
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, len + 8));
dmap_add_container(hreq->out_body, "mccr", len);
dmap_add_int(hreq->out_body, "mstt", 200);
for (i = 0; i < nfields; i++)
{
len = 12 + 10 + 8 + strlen(dmap_fields[i].desc);
dmap_add_container(hreq->out_body, "mdcl", len);
dmap_add_string(hreq->out_body, "mcnm", dmap_fields[i].tag); /* 12 */
dmap_add_string(hreq->out_body, "mcna", dmap_fields[i].desc); /* 8 + strlen(desc) */
dmap_add_short(hreq->out_body, "mcty", dmap_fields[i].type); /* 10 */
}
return DAAP_REPLY_OK;
}
static enum daap_reply_result
daap_reply_login(struct httpd_request *hreq)
{
struct daap_session *adhoc = hreq->extra_data;
struct daap_session *session;
struct pairing_info pi;
const char *param;
int request_session_id;
int ret;
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 32));
param = httpd_query_value_find(hreq->query, "pairing-guid");
if (param && !net_peer_address_is_trusted(hreq->peer_address))
{
if (strlen(param) < 3)
{
DPRINTF(E_LOG, L_DAAP, "Login attempt from %s with invalid pairing-guid: %s\n", hreq->peer_address, param);
return DAAP_REPLY_FORBIDDEN;
}
memset(&pi, 0, sizeof(struct pairing_info));
pi.guid = strdup(param + 2); /* Skip leading 0X */
ret = db_pairing_fetch_byguid(&pi);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Login attempt from %s with invalid pairing-guid: %s\n", hreq->peer_address, param);
free_pi(&pi, 1);
return DAAP_REPLY_FORBIDDEN;
}
DPRINTF(E_INFO, L_DAAP, "Remote '%s' (%s) logging in with GUID %s\n", pi.name, hreq->peer_address, pi.guid);
free_pi(&pi, 1);
}
else
{
if (hreq->user_agent)
DPRINTF(E_INFO, L_DAAP, "Client '%s' logging in from %s\n", hreq->user_agent, hreq->peer_address);
else
DPRINTF(E_INFO, L_DAAP, "Client (unknown user-agent) logging in from %s\n", hreq->peer_address);
}
param = httpd_query_value_find(hreq->query, "request-session-id");
if (param)
{
ret = safe_atoi32(param, &request_session_id);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Login request where request-session-id is not an integer\n");
request_session_id = 0;
}
}
else
request_session_id = 0;
session = daap_session_add(adhoc->is_remote, request_session_id);
if (!session)
{
dmap_error_make(hreq->out_body, "mlog", "Could not start session");
return DAAP_REPLY_ERROR;
}
dmap_add_container(hreq->out_body, "mlog", 24);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_int(hreq->out_body, "mlid", session->id); /* 12 */
return DAAP_REPLY_OK;
}
static enum daap_reply_result
daap_reply_logout(struct httpd_request *hreq)
{
if (!hreq->extra_data)
return DAAP_REPLY_FORBIDDEN;
daap_session_remove(hreq->extra_data);
hreq->extra_data = NULL;
return DAAP_REPLY_LOGOUT;
}
static enum daap_reply_result
daap_reply_update(struct httpd_request *hreq)
{
struct daap_update_request *ur;
const char *param;
int reqd_rev;
int ret;
if (!hreq->backend)
{
DPRINTF(E_LOG, L_DAAP, "Bug! daap_reply_update() cannot be called without an actual connection\n");
return DAAP_REPLY_NO_CONNECTION;
}
param = httpd_query_value_find(hreq->query, "revision-number");
if (!param)
{
DPRINTF(E_DBG, L_DAAP, "Missing revision-number in client update request\n");
/* Some players (Amarok, Banshee) don't supply a revision number.
They get a standard update of everything. */
param = "1"; /* Default to "1" will ensure an update */
}
ret = safe_atoi32(param, &reqd_rev);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Parameter revision-number not an integer\n");
dmap_error_make(hreq->out_body, "mupd", "Invalid request");
return DAAP_REPLY_ERROR;
}
if (reqd_rev == 1) /* Or revision is not valid */
{
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 32));
/* Send back current revision */
dmap_add_container(hreq->out_body, "mupd", 24);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_int(hreq->out_body, "musr", current_rev); /* 12 */
return DAAP_REPLY_OK;
}
/* Else, just let the request hang until we have changes to push back */
ur = calloc(1, sizeof(struct daap_update_request));
if (!ur)
{
DPRINTF(E_LOG, L_DAAP, "Out of memory for update request\n");
dmap_error_make(hreq->out_body, "mupd", "Out of memory");
return DAAP_REPLY_ERROR;
}
if (DAAP_UPDATE_REFRESH > 0)
{
ur->timeout = evtimer_new(hreq->evbase, update_refresh_cb, ur);
if (ur->timeout)
ret = evtimer_add(ur->timeout, &daap_update_refresh_tv);
else
ret = -1;
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Out of memory for update request event\n");
dmap_error_make(hreq->out_body, "mupd", "Could not register timer");
update_free(ur);
return DAAP_REPLY_ERROR;
}
}
/* NOTE: we may need to keep reqd_rev in there too */
ur->hreq = hreq;
ur->next = update_requests;
update_requests = ur;
/* If the connection fails before we have an update to push out
* to the client, we need to know.
*/
httpd_request_close_cb_set(hreq, update_fail_cb, ur);
return DAAP_REPLY_NONE;
}
static enum daap_reply_result
daap_reply_activity(struct httpd_request *hreq)
{
/* That's so nice, thanks for letting us know */
return DAAP_REPLY_NO_CONTENT;
}
static enum daap_reply_result
daap_reply_dblist(struct httpd_request *hreq)
{
struct evbuffer *content;
struct evbuffer *item;
char *name;
char *name_radio;
size_t len;
uint32_t count = 0;
name = cfg_getstr(cfg_getsec(cfg, "library"), "name");
name_radio = cfg_getstr(cfg_getsec(cfg, "library"), "name_radio");
CHECK_NULL(L_DAAP, content = evbuffer_new());
CHECK_NULL(L_DAAP, item = evbuffer_new());
CHECK_ERR(L_DAAP, evbuffer_expand(item, 512));
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 1024));
// Add db entry for library with dbid = 1
dmap_add_int(item, "miid", 1);
dmap_add_long(item, "mper", 1);
dmap_add_int(item, "mdbk", 1);
dmap_add_int(item, "aeCs", 1);
dmap_add_string(item, "minm", name);
db_files_get_count(&count, NULL, NULL);
dmap_add_int(item, "mimc", (int)count);
db_pl_get_count(&count); // TODO Don't count empty smart playlists, because they get excluded in aply
dmap_add_int(item, "mctc", (int)count);
// dmap_add_int(content, "aeMk", 0x405); // com.apple.itunes.extended-media-kind (OR of all in library)
dmap_add_int(item, "meds", 3);
// Create container for library db
len = evbuffer_get_length(item);
dmap_add_container(content, "mlit", len);
CHECK_ERR(L_DAAP, evbuffer_add_buffer(content, item));
// Add second db entry for radio with dbid = DAAP_DB_RADIO
CHECK_ERR(L_DAAP, evbuffer_expand(item, 512));
dmap_add_int(item, "miid", DAAP_DB_RADIO);
dmap_add_long(item, "mper", DAAP_DB_RADIO);
dmap_add_int(item, "mdbk", 0x64);
dmap_add_int(item, "aeCs", 0);
dmap_add_string(item, "minm", name_radio);
db_pl_get_count(&count); // TODO This counts too much, should only include stream playlists
dmap_add_int(item, "mimc", (int)count);
dmap_add_int(item, "mctc", 0);
dmap_add_int(item, "aeMk", 1); // com.apple.itunes.extended-media-kind (OR of all in library)
dmap_add_int(item, "meds", 3);
// Create container for radio db
len = evbuffer_get_length(item);
dmap_add_container(content, "mlit", len);
CHECK_ERR(L_DAAP, evbuffer_add_buffer(content, item));
// Create container
len = evbuffer_get_length(content);
dmap_add_container(hreq->out_body, "avdb", len + 53);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_char(hreq->out_body, "muty", 0); /* 9 */
dmap_add_int(hreq->out_body, "mtco", 2); /* 12 */
dmap_add_int(hreq->out_body, "mrco", 2); /* 12 */
dmap_add_container(hreq->out_body, "mlcl", len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, content));
evbuffer_free(item);
evbuffer_free(content);
return DAAP_REPLY_OK;
}
static enum daap_reply_result
daap_reply_songlist_generic(struct httpd_request *hreq, int playlist)
{
struct query_params qp;
struct db_media_file_info dbmfi;
struct evbuffer *song;
struct evbuffer *songlist;
struct daap_session *s;
const struct dmap_field **meta = NULL;
struct sort_ctx *sctx;
const char *param;
const char *client_codecs;
const char *tag;
size_t len;
enum transcode_profile profile;
struct transcode_metadata_string xcode_metadata;
struct media_quality quality = { HTTPD_STREAM_SAMPLE_RATE, HTTPD_STREAM_BPS, HTTPD_STREAM_CHANNELS, HTTPD_STREAM_BIT_RATE };
uint32_t len_ms;
int nmeta = 0;
int sort_headers;
int nsongs;
int ret;
DPRINTF(E_DBG, L_DAAP, "Fetching song list for playlist %d\n", playlist);
s = hreq->extra_data;
if (!s)
{
DPRINTF(E_LOG, L_DAAP, "Bug! daap_reply_songlist_generic() called with NULL session (playlist %d)\n", playlist);
return DAAP_REPLY_ERROR;
}
if (playlist != -1)
{
// Songs in playlist
tag = "apso";
query_params_set(&qp, &sort_headers, hreq, Q_PLITEMS);
qp.id = playlist;
}
else
{
// Songs in database
tag = "adbs";
query_params_set(&qp, &sort_headers, hreq, Q_ITEMS);
}
CHECK_NULL(L_DAAP, songlist = evbuffer_new());
CHECK_NULL(L_DAAP, song = evbuffer_new());
CHECK_NULL(L_DAAP, sctx = daap_sort_context_new());
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 61));
CHECK_ERR(L_DAAP, evbuffer_expand(songlist, 4096));
CHECK_ERR(L_DAAP, evbuffer_expand(song, 512));
param = httpd_query_value_find(hreq->query, "meta");
if (!param)
{
DPRINTF(E_DBG, L_DAAP, "No meta parameter in query, using default\n");
if (playlist != -1)
param = default_meta_plsongs;
}
if (param)
{
nmeta = parse_meta(&meta, param);
if (nmeta < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to parse meta parameter in DAAP query\n");
goto error;
}
}
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_error_make(hreq->out_body, tag, "Could not start query");
goto error;
}
client_codecs = NULL;
if (!s->is_remote && hreq->in_headers)
{
client_codecs = httpd_header_find(hreq->in_headers, "Accept-Codecs");
}
nsongs = 0;
while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0)
{
nsongs++;
// Not sure if the is_remote path is really needed. Note that if you
// change the below you might need to do the same in rsp_reply_playlist()
profile = s->is_remote ? XCODE_WAV : transcode_needed(hreq->user_agent, client_codecs, dbmfi.codectype);
if (profile == XCODE_UNKNOWN)
{
DPRINTF(E_LOG, L_DAAP, "Cannot transcode '%s', codec type is unknown\n", dbmfi.fname);
}
else if (profile != XCODE_NONE)
{
if (safe_atou32(dbmfi.song_length, &len_ms) < 0)
len_ms = 3 * 60 * 1000; // just a fallback default
transcode_metadata_strings_set(&xcode_metadata, profile, &quality, len_ms);
dbmfi.type = xcode_metadata.type;
dbmfi.codectype = xcode_metadata.codectype;
dbmfi.description = xcode_metadata.description;
dbmfi.file_size = xcode_metadata.file_size;
dbmfi.bitrate = xcode_metadata.bitrate;
}
ret = dmap_encode_file_metadata(songlist, song, &dbmfi, meta, nmeta, sort_headers);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to encode song metadata\n");
ret = -100;
break;
}
if (sort_headers)
{
ret = daap_sort_build(sctx, dbmfi.title_sort);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add sort header to DAAP song list reply\n");
ret = -100;
break;
}
}
DPRINTF(E_SPAM, L_DAAP, "Done with song\n");
}
DPRINTF(E_DBG, L_DAAP, "Done with song list, %d songs\n", nsongs);
db_query_end(&qp);
if (ret == -100)
{
dmap_error_make(hreq->out_body, tag, "Out of memory");
goto error;
}
else if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Error fetching results\n");
dmap_error_make(hreq->out_body, tag, "Error fetching query results");
goto error;
}
/* Add header to evbuf, add songlist to evbuf */
len = evbuffer_get_length(songlist);
if (sort_headers)
{
daap_sort_finalize(sctx);
dmap_add_container(hreq->out_body, tag, len + evbuffer_get_length(sctx->headerlist) + 61);
}
else
dmap_add_container(hreq->out_body, tag, len + 53);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_char(hreq->out_body, "muty", 0); /* 9 */
dmap_add_int(hreq->out_body, "mtco", qp.results); /* 12 */
dmap_add_int(hreq->out_body, "mrco", nsongs); /* 12 */
dmap_add_container(hreq->out_body, "mlcl", len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, songlist));
if (sort_headers)
{
len = evbuffer_get_length(sctx->headerlist);
dmap_add_container(hreq->out_body, "mshl", len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, sctx->headerlist));
}
free(meta);
daap_sort_context_free(sctx);
evbuffer_free(song);
evbuffer_free(songlist);
free_query_params(&qp, 1);
return DAAP_REPLY_OK;
error:
free(meta);
daap_sort_context_free(sctx);
evbuffer_free(song);
evbuffer_free(songlist);
free_query_params(&qp, 1);
return DAAP_REPLY_ERROR;
}
static enum daap_reply_result
daap_reply_dbsonglist(struct httpd_request *hreq)
{
return daap_reply_songlist_generic(hreq, -1);
}
static enum daap_reply_result
daap_reply_plsonglist(struct httpd_request *hreq)
{
int playlist;
int ret;
ret = safe_atoi32(hreq->path_parts[3], &playlist);
if (ret < 0)
{
dmap_error_make(hreq->out_body, "apso", "Invalid playlist ID");
return DAAP_REPLY_ERROR;
}
// This is a work-around for Remote for iTunes that for unknown reasons
// sometimes requests playlist 0
if (playlist == 0)
{
DPRINTF(E_LOG, L_DAAP, "Client '%s' made invalid request for playlist 0, returning playlist 1\n", hreq->user_agent);
playlist = 1;
}
return daap_reply_songlist_generic(hreq, playlist);
}
static enum daap_reply_result
daap_reply_playlists(struct httpd_request *hreq)
{
struct query_params qp;
struct db_playlist_info dbpli;
struct evbuffer *playlistlist;
struct evbuffer *playlist;
const struct dmap_field_map *dfm;
const struct dmap_field *df;
const struct dmap_field **meta = NULL;
const char *param;
char **strval;
size_t len;
int database;
int cfg_radiopl;
int nmeta;
int npls;
int32_t plid;
int32_t pltype;
int32_t plitems;
int32_t plstreams;
int32_t plparent;
int i;
int ret;
cfg_radiopl = cfg_getbool(cfg_getsec(cfg, "library"), "radio_playlists");
ret = safe_atoi32(hreq->path_parts[1], &database);
if (ret < 0)
{
dmap_error_make(hreq->out_body, "aply", "Invalid database ID");
return DAAP_REPLY_ERROR;
}
query_params_set(&qp, NULL, hreq, Q_PL);
qp.sort = S_PLAYLIST; // Only S_PLAYLIST (and S_NONE) works for Q_PL
CHECK_NULL(L_DAAP, playlistlist = evbuffer_new());
CHECK_NULL(L_DAAP, playlist = evbuffer_new());
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 61));
CHECK_ERR(L_DAAP, evbuffer_expand(playlistlist, 1024));
CHECK_ERR(L_DAAP, evbuffer_expand(playlist, 128));
param = httpd_query_value_find(hreq->query, "meta");
if (!param)
{
DPRINTF(E_LOG, L_DAAP, "No meta parameter in query, using default\n");
param = default_meta_pl;
}
nmeta = parse_meta(&meta, param);
if (nmeta < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to parse meta parameter in DAAP query\n");
dmap_error_make(hreq->out_body, "aply", "Failed to parse query");
goto error;
}
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_error_make(hreq->out_body, "aply", "Could not start query");
goto error;
}
npls = 0;
while (((ret = db_query_fetch_pl(&dbpli, &qp)) == 0) && (dbpli.id))
{
plid = 1;
if (safe_atoi32(dbpli.id, &plid) != 0)
continue;
pltype = 0;
if (safe_atoi32(dbpli.type, &pltype) != 0)
continue;
plitems = 0;
if (safe_atoi32(dbpli.items, &plitems) != 0)
continue;
plstreams = 0;
if (safe_atoi32(dbpli.streams, &plstreams) != 0)
continue;
/* Database DAAP_DB_RADIO is radio, so for that db skip playlists without
* streams and for other databases skip playlists which are just streams
*/
if ((database == DAAP_DB_RADIO) && (plstreams == 0))
continue;
if (!cfg_radiopl && (database != DAAP_DB_RADIO) && (plstreams > 0) && (plstreams == plitems))
continue;
/* Don't add empty Special playlists */
if ((plid > 1) && (plitems == 0) && (pltype == PL_SPECIAL))
continue;
npls++;
for (i = 0; i < nmeta; i++)
{
df = meta[i];
dfm = df->dfm;
/* dmap.itemcount - always added */
if (dfm == &dfm_dmap_mimc)
continue;
/* Add field "com.apple.itunes.smart-playlist" for special and smart playlists
(excluding the special playlist for "library" with id = 1) */
if (dfm == &dfm_dmap_aeSP)
{
if ((pltype == PL_SMART) || ((pltype == PL_SPECIAL) && (plid != 1)))
{
dmap_add_char(playlist, "aeSP", 1);
}
/* Add field "com.apple.itunes.special-playlist" for special playlists
(excluding the special playlist for "library" with id = 1) */
if ((pltype == PL_SPECIAL) && (plid != 1))
{
int32_t aePS = 0;
ret = safe_atoi32(dbpli.special_id, &aePS);
if ((ret == 0) && (aePS > 0))
dmap_add_char(playlist, "aePS", aePS);
}
continue;
}
/* Not in struct playlist_info */
if (dfm->pli_offset < 0)
continue;
strval = (char **) ((char *)&dbpli + dfm->pli_offset);
if (!(*strval) || (**strval == '\0'))
continue;
dmap_add_field(playlist, df, *strval, 0);
DPRINTF(E_SPAM, L_DAAP, "Done with meta tag %s (%s)\n", df->desc, *strval);
}
/* Item count (mimc) */
dmap_add_int(playlist, "mimc", plitems);
/* Container ID (mpco) */
ret = safe_atoi32(dbpli.parent_id, &plparent);
if (ret == 0)
dmap_add_int(playlist, "mpco", plparent);
else
dmap_add_int(playlist, "mpco", 0);
/* Base playlist (abpl), id = 1 */
if (plid == 1)
dmap_add_char(playlist, "abpl", 1);
DPRINTF(E_SPAM, L_DAAP, "Done with playlist\n");
len = evbuffer_get_length(playlist);
dmap_add_container(playlistlist, "mlit", len);
ret = evbuffer_add_buffer(playlistlist, playlist);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add playlist to playlist list for DAAP playlists reply\n");
ret = -100;
break;
}
}
db_query_end(&qp);
DPRINTF(E_DBG, L_DAAP, "Done with playlist list, %d playlists\n", npls);
if (ret == -100)
{
dmap_error_make(hreq->out_body, "aply", "Out of memory");
goto error;
}
else if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Error fetching results\n");
dmap_error_make(hreq->out_body, "aply", "Error fetching query results");
goto error;
}
/* Add header to evbuf, add playlistlist to evbuf */
len = evbuffer_get_length(playlistlist);
dmap_add_container(hreq->out_body, "aply", len + 53);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_char(hreq->out_body, "muty", 0); /* 9 */
dmap_add_int(hreq->out_body, "mtco", qp.results); /* 12 */
dmap_add_int(hreq->out_body,"mrco", npls); /* 12 */
dmap_add_container(hreq->out_body, "mlcl", len);
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, playlistlist));
free(meta);
evbuffer_free(playlist);
evbuffer_free(playlistlist);
free_query_params(&qp, 1);
return DAAP_REPLY_OK;
error:
free(meta);
evbuffer_free(playlist);
evbuffer_free(playlistlist);
free_query_params(&qp, 1);
return DAAP_REPLY_ERROR;
}
static enum daap_reply_result
daap_reply_groups(struct httpd_request *hreq)
{
struct query_params qp;
struct db_group_info dbgri;
struct evbuffer *group;
struct evbuffer *grouplist;
const struct dmap_field_map *dfm;
const struct dmap_field *df;
const struct dmap_field **meta = NULL;
struct sort_ctx *sctx;
cfg_t *lib;
const char *param;
char **strval;
char *tag;
size_t len;
int nmeta;
int sort_headers;
int ngrp;
int32_t val;
int i;
int ret;
param = httpd_query_value_find(hreq->query, "group-type");
if (param && strcmp(param, "artists") == 0)
{
// Request from Remote may have the form:
// groups?meta=dmap.xxx,dma...&type=music&group-type=artists&sort=album&include-sort-headers=1&query=('...')&session-id=...
// Note: Since grouping by artist and sorting by album is crazy we override
tag = "agar";
query_params_set(&qp, &sort_headers, hreq, Q_GROUP_ARTISTS);
qp.sort = S_ARTIST;
}
else
{
// Request from Remote may have the form:
// groups?meta=dmap.xxx,dma...&type=music&group-type=albums&sort=artist&include-sort-headers=0&query=('...'))&session-id=...
// Sort may also be 'album'
tag = "agal";
query_params_set(&qp, &sort_headers, hreq, Q_GROUP_ALBUMS);
if (qp.sort == S_NONE)
qp.sort = S_ALBUM;
}
CHECK_NULL(L_DAAP, grouplist = evbuffer_new());
CHECK_NULL(L_DAAP, group = evbuffer_new());
CHECK_NULL(L_DAAP, sctx = daap_sort_context_new());
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 61));
CHECK_ERR(L_DAAP, evbuffer_expand(grouplist, 1024));
CHECK_ERR(L_DAAP, evbuffer_expand(group, 128));
param = httpd_query_value_find(hreq->query, "meta");
if (!param)
{
DPRINTF(E_LOG, L_DAAP, "No meta parameter in query, using default\n");
param = default_meta_group;
}
nmeta = parse_meta(&meta, param);
if (nmeta < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to parse meta parameter in DAAP query\n");
dmap_error_make(hreq->out_body, tag, "Failed to parse query");
goto error;
}
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_error_make(hreq->out_body, tag, "Could not start query");
goto error;
}
ngrp = 0;
while ((ret = db_query_fetch_group(&dbgri, &qp)) == 0)
{
/* Don't add item if no name (eg blank album name) */
if (strlen(dbgri.itemname) == 0)
continue;
/* Don't add single item albums/artists if configured to hide */
lib = cfg_getsec(cfg, "library");
if (cfg_getbool(lib, "hide_singles") && (strcmp(dbgri.itemcount, "1") == 0))
continue;
ngrp++;
for (i = 0; i < nmeta; i++)
{
df = meta[i];
if (!df)
continue;
dfm = df->dfm;
/* dmap.itemcount - always added */
if (dfm == &dfm_dmap_mimc)
continue;
/* Not in struct group_info */
if (dfm->gri_offset < 0)
continue;
strval = (char **) ((char *)&dbgri + dfm->gri_offset);
if (!(*strval) || (**strval == '\0'))
continue;
dmap_add_field(group, df, *strval, 0);
DPRINTF(E_SPAM, L_DAAP, "Done with meta tag %s (%s)\n", df->desc, *strval);
}
if (sort_headers)
{
ret = daap_sort_build(sctx, dbgri.itemname_sort);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add sort header to DAAP groups reply\n");
ret = -100;
break;
}
}
/* Item count, always added (mimc) */
val = 0;
ret = safe_atoi32(dbgri.itemcount, &val);
if ((ret == 0) && (val > 0))
dmap_add_int(group, "mimc", val);
/* Song album artist (asaa), always added if group-type is albums */
if (qp.type == Q_GROUP_ALBUMS)
dmap_add_string(group, "asaa", dbgri.songalbumartist);
/* Item id (miid) */
val = 0;
ret = safe_atoi32(dbgri.id, &val);
if ((ret == 0) && (val > 0))
dmap_add_int(group, "miid", val);
DPRINTF(E_SPAM, L_DAAP, "Done with group\n");
len = evbuffer_get_length(group);
dmap_add_container(grouplist, "mlit", len);
ret = evbuffer_add_buffer(grouplist, group);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add group to group list for DAAP groups reply\n");
ret = -100;
break;
}
}
db_query_end(&qp);
DPRINTF(E_DBG, L_DAAP, "Done with group list, %d groups\n", ngrp);
if (ret == -100)
{
dmap_error_make(hreq->out_body, tag, "Out of memory");
goto error;
}
else if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Error fetching results\n");
dmap_error_make(hreq->out_body, tag, "Error fetching query results");
goto error;
}
/* Add header to evbuf, add grouplist to evbuf */
len = evbuffer_get_length(grouplist);
if (sort_headers)
{
daap_sort_finalize(sctx);
dmap_add_container(hreq->out_body, tag, len + evbuffer_get_length(sctx->headerlist) + 61);
}
else
dmap_add_container(hreq->out_body, tag, len + 53);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_char(hreq->out_body, "muty", 0); /* 9 */
dmap_add_int(hreq->out_body, "mtco", qp.results); /* 12 */
dmap_add_int(hreq->out_body,"mrco", ngrp); /* 12 */
dmap_add_container(hreq->out_body, "mlcl", len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, grouplist));
if (sort_headers)
{
len = evbuffer_get_length(sctx->headerlist);
dmap_add_container(hreq->out_body, "mshl", len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, sctx->headerlist));
}
free(meta);
daap_sort_context_free(sctx);
evbuffer_free(group);
evbuffer_free(grouplist);
free_query_params(&qp, 1);
return DAAP_REPLY_OK;
error:
free(meta);
daap_sort_context_free(sctx);
evbuffer_free(group);
evbuffer_free(grouplist);
free_query_params(&qp, 1);
return DAAP_REPLY_ERROR;
}
static enum daap_reply_result
daap_reply_browse(struct httpd_request *hreq)
{
struct query_params qp;
struct evbuffer *itemlist;
struct sort_ctx *sctx;
char *browse_item;
char *sort_item;
char *tag;
size_t len;
int sort_headers;
int nitems;
int ret;
if (strcmp(hreq->path_parts[3], "artists") == 0)
{
tag = "abar";
query_params_set(&qp, &sort_headers, hreq, Q_BROWSE_ARTISTS);
}
else if (strcmp(hreq->path_parts[3], "albums") == 0)
{
tag = "abal";
query_params_set(&qp, &sort_headers, hreq, Q_BROWSE_ALBUMS);
}
else if (strcmp(hreq->path_parts[3], "genres") == 0)
{
tag = "abgn";
query_params_set(&qp, &sort_headers, hreq, Q_BROWSE_GENRES);
}
else if (strcmp(hreq->path_parts[3], "composers") == 0)
{
tag = "abcp";
query_params_set(&qp, &sort_headers, hreq, Q_BROWSE_COMPOSERS);
}
else
{
DPRINTF(E_LOG, L_DAAP, "Invalid DAAP browse request type '%s'\n", hreq->path_parts[3]);
dmap_error_make(hreq->out_body, "abro", "Invalid browse type");
return DAAP_REPLY_ERROR;
}
CHECK_NULL(L_DAAP, itemlist = evbuffer_new());
CHECK_NULL(L_DAAP, sctx = daap_sort_context_new());
CHECK_ERR(L_DAAP, evbuffer_expand(hreq->out_body, 52));
CHECK_ERR(L_DAAP, evbuffer_expand(itemlist, 1024)); // Just a starting alloc, it'll expand as needed
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_error_make(hreq->out_body, "abro", "Could not start query");
goto error;
}
nitems = 0;
while (((ret = db_query_fetch_string_sort(&browse_item, &sort_item, &qp)) == 0) && (browse_item))
{
nitems++;
if (sort_headers)
{
ret = daap_sort_build(sctx, sort_item);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add sort header to DAAP browse reply\n");
break;
}
}
dmap_add_string(itemlist, "mlit", browse_item);
}
db_query_end(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Error fetching/building results\n");
dmap_error_make(hreq->out_body, "abro", "Error fetching/building query results");
goto error;
}
len = evbuffer_get_length(itemlist);
if (sort_headers)
{
daap_sort_finalize(sctx);
dmap_add_container(hreq->out_body, "abro", len + evbuffer_get_length(sctx->headerlist) + 52);
}
else
dmap_add_container(hreq->out_body, "abro", len + 44);
dmap_add_int(hreq->out_body, "mstt", 200); /* 12 */
dmap_add_int(hreq->out_body, "mtco", qp.results); /* 12 */
dmap_add_int(hreq->out_body, "mrco", nitems); /* 12 */
dmap_add_container(hreq->out_body, tag, len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, itemlist));
if (sort_headers)
{
len = evbuffer_get_length(sctx->headerlist);
dmap_add_container(hreq->out_body, "mshl", len); /* 8 */
CHECK_ERR(L_DAAP, evbuffer_add_buffer(hreq->out_body, sctx->headerlist));
}
daap_sort_context_free(sctx);
evbuffer_free(itemlist);
free_query_params(&qp, 1);
return DAAP_REPLY_OK;
error:
daap_sort_context_free(sctx);
evbuffer_free(itemlist);
free_query_params(&qp, 1);
return DAAP_REPLY_ERROR;
}
/* NOTE: We only handle artwork at the moment */
static enum daap_reply_result
daap_reply_extra_data(struct httpd_request *hreq)
{
char clen[32];
const char *param;
char *ctype;
size_t len;
int id;
int max_w;
int max_h;
int ret;
if (!hreq->backend)
{
DPRINTF(E_LOG, L_DAAP, "Bug! daap_reply_extra_data() cannot be called without an actual connection\n");
return DAAP_REPLY_NO_CONNECTION;
}
ret = safe_atoi32(hreq->path_parts[3], &id);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not convert id parameter to integer: '%s'\n", hreq->path_parts[3]);
return DAAP_REPLY_BAD_REQUEST;
}
if (httpd_query_value_find(hreq->query, "mw") && httpd_query_value_find(hreq->query, "mh"))
{
param = httpd_query_value_find(hreq->query, "mw");
ret = safe_atoi32(param, &max_w);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not convert mw parameter to integer: '%s'\n", param);
return DAAP_REPLY_BAD_REQUEST;
}
param = httpd_query_value_find(hreq->query, "mh");
ret = safe_atoi32(param, &max_h);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not convert mh parameter to integer: '%s'\n", param);
return DAAP_REPLY_BAD_REQUEST;
}
}
else
{
DPRINTF(E_DBG, L_DAAP, "Request for artwork without mw or mh parameter\n");
max_w = 0;
max_h = 0;
}
if (strcmp(hreq->path_parts[2], "groups") == 0)
ret = artwork_get_group(hreq->out_body, id, max_w, max_h, 0);
else if (strcmp(hreq->path_parts[2], "items") == 0)
ret = artwork_get_item(hreq->out_body, id, max_w, max_h, 0);
len = evbuffer_get_length(hreq->out_body);
switch (ret)
{
case ART_FMT_PNG:
ctype = "image/png";
break;
case ART_FMT_JPEG:
ctype = "image/jpeg";
break;
default:
if (len > 0)
evbuffer_drain(hreq->out_body, len);
goto no_artwork;
}
httpd_header_remove(hreq->out_headers, "Content-Type");
httpd_header_add(hreq->out_headers, "Content-Type", ctype);
snprintf(clen, sizeof(clen), "%ld", (long)len);
httpd_header_add(hreq->out_headers, "Content-Length", clen);
return DAAP_REPLY_OK_NO_GZIP;
no_artwork:
return DAAP_REPLY_NO_CONTENT;
}
static enum daap_reply_result
daap_stream(struct httpd_request *hreq)
{
int id;
int ret;
if (!hreq->backend)
{
DPRINTF(E_LOG, L_DAAP, "Bug! daap_stream() cannot be called without an actual connection\n");
return DAAP_REPLY_NO_CONNECTION;
}
ret = safe_atoi32(hreq->path_parts[3], &id);
if (ret < 0)
return DAAP_REPLY_BAD_REQUEST;
httpd_stream_file(hreq, id);
return DAAP_REPLY_NONE;
}
#ifdef DMAP_TEST
static const struct dmap_field dmap_TEST = { "test.container", "TEST", NULL, DMAP_TYPE_LIST };
static const struct dmap_field dmap_TST1 = { "test.ubyte", "TST1", NULL, DMAP_TYPE_UBYTE };
static const struct dmap_field dmap_TST2 = { "test.byte", "TST2", NULL, DMAP_TYPE_BYTE };
static const struct dmap_field dmap_TST3 = { "test.ushort", "TST3", NULL, DMAP_TYPE_USHORT };
static const struct dmap_field dmap_TST4 = { "test.short", "TST4", NULL, DMAP_TYPE_SHORT };
static const struct dmap_field dmap_TST5 = { "test.uint", "TST5", NULL, DMAP_TYPE_UINT };
static const struct dmap_field dmap_TST6 = { "test.int", "TST6", NULL, DMAP_TYPE_INT };
static const struct dmap_field dmap_TST7 = { "test.ulong", "TST7", NULL, DMAP_TYPE_ULONG };
static const struct dmap_field dmap_TST8 = { "test.long", "TST8", NULL, DMAP_TYPE_LONG };
static const struct dmap_field dmap_TST9 = { "test.string", "TST9", NULL, DMAP_TYPE_STRING };
static enum daap_reply_result
daap_reply_dmap_test(struct httpd_request *hreq)
{
struct evbuffer *test;
char buf[64];
int ret;
CHECK_NULL(L_DAAP, test = evbuffer_new());
/* UBYTE */
snprintf(buf, sizeof(buf), "%" PRIu8, UINT8_MAX);
dmap_add_field(test, &dmap_TST1, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* BYTE */
snprintf(buf, sizeof(buf), "%" PRIi8, INT8_MIN);
dmap_add_field(test, &dmap_TST2, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
snprintf(buf, sizeof(buf), "%" PRIi8, INT8_MAX);
dmap_add_field(test, &dmap_TST2, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* USHORT */
snprintf(buf, sizeof(buf), "%" PRIu16, UINT16_MAX);
dmap_add_field(test, &dmap_TST3, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* SHORT */
snprintf(buf, sizeof(buf), "%" PRIi16, INT16_MIN);
dmap_add_field(test, &dmap_TST4, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
snprintf(buf, sizeof(buf), "%" PRIi16, INT16_MAX);
dmap_add_field(test, &dmap_TST4, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* UINT */
snprintf(buf, sizeof(buf), "%" PRIu32, UINT32_MAX);
dmap_add_field(test, &dmap_TST5, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* INT */
snprintf(buf, sizeof(buf), "%" PRIi32, INT32_MIN);
dmap_add_field(test, &dmap_TST6, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
snprintf(buf, sizeof(buf), "%" PRIi32, INT32_MAX);
dmap_add_field(test, &dmap_TST6, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* ULONG */
snprintf(buf, sizeof(buf), "%" PRIu64, UINT64_MAX);
dmap_add_field(test, &dmap_TST7, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
/* LONG */
snprintf(buf, sizeof(buf), "%" PRIi64, INT64_MIN);
dmap_add_field(test, &dmap_TST8, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
snprintf(buf, sizeof(buf), "%" PRIi64, INT64_MAX);
dmap_add_field(test, &dmap_TST8, buf, 0);
dmap_add_field(test, &dmap_TST9, buf, 0);
dmap_add_container(hreq->out_body, dmap_TEST.tag, evbuffer_get_length(test));
ret = evbuffer_add_buffer(hreq->out_body, test);
evbuffer_free(test);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add test results to DMAP test reply\n");
dmap_error_make(hreq->out_body, dmap_TEST.tag, "Out of memory");
return DAAP_REPLY_ERROR;
}
return DAAP_REPLY_OK_NO_GZIP;
}
#endif /* DMAP_TEST */
static struct httpd_uri_map daap_handlers[] =
{
{
.regexp = "^/server-info$",
.handler = daap_reply_server_info
},
{
.regexp = "^/content-codes$",
.handler = daap_reply_content_codes
},
{
.regexp = "^/login$",
.handler = daap_reply_login
},
{
.regexp = "^/logout$",
.handler = daap_reply_logout
},
{
.regexp = "^/update$",
.handler = daap_reply_update,
},
{
.regexp = "^/activity$",
.handler = daap_reply_activity
},
{
.regexp = "^/databases$",
.handler = daap_reply_dblist
},
{
.regexp = "^/databases/[[:digit:]]+/browse/[^/]+$",
.handler = daap_reply_browse
},
{
.regexp = "^/databases/[[:digit:]]+/items$",
.handler = daap_reply_dbsonglist
},
{
.regexp = "^/databases/[[:digit:]]+/items/[[:digit:]]+[.][^/]+$",
.handler = daap_stream
},
{
.regexp = "^/databases/[[:digit:]]+/items/[[:digit:]]+/extra_data/artwork$",
.handler = daap_reply_extra_data
},
{
.regexp = "^/databases/[[:digit:]]+/containers$",
.handler = daap_reply_playlists
},
{
.regexp = "^/databases/[[:digit:]]+/containers/[[:digit:]]+/items$",
.handler = daap_reply_plsonglist
},
{
.regexp = "^/databases/[[:digit:]]+/groups$",
.handler = daap_reply_groups
},
{
.regexp = "^/databases/[[:digit:]]+/groups/[[:digit:]]+/extra_data/artwork$",
.handler = daap_reply_extra_data
},
#ifdef DMAP_TEST
{
.regexp = "^/dmap-test$",
.handler = daap_reply_dmap_test
},
#endif /* DMAP_TEST */
{
.regexp = NULL,
.handler = NULL
}
};
/* ------------------------------- DAAP API --------------------------------- */
/* iTunes 9 gives us an absolute request-uri like
* daap://10.1.1.20:3689/server-info
* iTunes 12.1 gives us an absolute request-uri for streaming like
* http://10.1.1.20:3689/databases/1/items/1.mp3
*/
static void
daap_request(struct httpd_request *hreq)
{
struct timespec start;
struct timespec end;
struct daap_session session;
const char *param;
int32_t id;
int ret;
int msec;
if (!hreq->handler)
{
DPRINTF(E_LOG, L_DAAP, "Unrecognized path in DAAP request: '%s'\n", hreq->uri);
daap_reply_send(hreq, DAAP_REPLY_BAD_REQUEST);
return;
}
// Check if we have a session and point hreq->extra_data to it
param = httpd_query_value_find(hreq->query, "session-id");
if (param)
{
ret = safe_atoi32(param, &id);
if (ret < 0)
DPRINTF(E_LOG, L_DAAP, "Ignoring non-numeric session id in DAAP request: '%s'\n", hreq->uri);
else
hreq->extra_data = daap_session_get(id);
}
// Create an ad-hoc session, which is a way of passing is_remote to the handler, even though no real session exists
if (!hreq->extra_data)
{
memset(&session, 0, sizeof(struct daap_session));
session.is_remote = (httpd_query_value_find(hreq->query, "pairing-guid") != NULL);
hreq->extra_data = &session;
}
ret = daap_request_authorize(hreq);
if (ret < 0)
{
return;
}
// Set reply headers
httpd_header_add(hreq->out_headers, "Accept-Ranges", "bytes");
httpd_header_add(hreq->out_headers, "DAAP-Server", PACKAGE_NAME "/" VERSION);
// Content-Type for all replies, even the actual audio streaming. Note that
// video streaming will override this Content-Type with a more appropriate
// video/<type> Content-Type as expected by clients like Front Row.
httpd_header_add(hreq->out_headers, "Content-Type", "application/x-dmap-tagged");
// Try the cache
ret = cache_daap_get(hreq->out_body, hreq->uri);
if (ret == 0)
{
// The cache will return the data gzipped, so httpd_send_reply won't need to do it
httpd_header_add(hreq->out_headers, "Content-Encoding", "gzip");
httpd_send_reply(hreq, HTTP_OK, "OK", HTTPD_SEND_NO_GZIP); // TODO not all want this reply
return;
}
// No dice, let's call the handler so it can construct a reply and then send it (note that the reply may be an error)
clock_gettime(CLOCK_MONOTONIC, &start);
ret = hreq->handler(hreq);
clock_gettime(CLOCK_MONOTONIC, &end);
msec = (end.tv_sec * 1000 + end.tv_nsec / 1000000) - (start.tv_sec * 1000 + start.tv_nsec / 1000000);
DPRINTF(E_DBG, L_DAAP, "DAAP request handled in %d milliseconds\n", msec);
if (ret == DAAP_REPLY_OK && msec > cache_daap_threshold() && hreq->user_agent)
cache_daap_add(hreq->uri, hreq->user_agent, ((struct daap_session *)hreq->extra_data)->is_remote, msec);
daap_reply_send(hreq, ret); // hreq is deallocted
}
int
daap_session_is_valid(int id)
{
struct daap_session *session;
session = daap_session_get(id);
if (session)
session->mtime = time(NULL);
return session ? 1 : 0;
}
// Thread: Cache
struct evbuffer *
daap_reply_build(const char *uri, const char *user_agent, int is_remote)
{
struct httpd_request *hreq;
struct evbuffer *out_body = NULL;
struct daap_session session;
int ret;
DPRINTF(E_DBG, L_DAAP, "Building reply for DAAP request: '%s'\n", uri);
hreq = httpd_request_new(NULL, NULL, uri, user_agent);
if (!hreq)
{
DPRINTF(E_LOG, L_DAAP, "Error building request: '%s'\n", uri);
goto out;
}
httpd_request_handler_set(hreq);
if (!hreq->handler)
{
DPRINTF(E_LOG, L_DAAP, "Cannot build reply, unrecognized path in request: '%s'\n", uri);
goto out;
}
memset(&session, 0, sizeof(struct daap_session));
session.is_remote = (bool)is_remote;
hreq->extra_data = &session;
ret = hreq->handler(hreq);
if (ret < 0)
{
goto out;
}
// Take ownership of the reply
out_body = hreq->out_body;
hreq->out_body = NULL;
out:
httpd_request_free(hreq);
return out_body;
}
static int
daap_init(void)
{
srand((unsigned)time(NULL));
current_rev = 2;
return 0;
}
static void
daap_deinit(void)
{
struct daap_session *s;
struct daap_update_request *ur;
for (s = daap_sessions; daap_sessions; s = daap_sessions)
{
daap_sessions = s->next;
daap_session_free(s);
}
for (ur = update_requests; update_requests; ur = update_requests)
{
update_requests = ur->next;
daap_reply_send(ur->hreq, DAAP_REPLY_SERVUNAVAIL);
update_free(ur);
}
}
struct httpd_module httpd_daap =
{
.name = "DAAP",
.type = MODULE_DAAP,
.logdomain = L_DAAP,
.subpaths = { "/databases/", NULL },
#ifdef DMAP_TEST
.fullpaths = { "/databases", "/server-info", "/content-codes", "/login", "/update", "/activity", "/logout", "/dmap-test", NULL },
#else
.fullpaths = { "/databases", "/server-info", "/content-codes", "/login", "/update", "/activity", "/logout", NULL },
#endif
.handlers = daap_handlers,
.init = daap_init,
.deinit = daap_deinit,
.request = daap_request,
};
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