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owntone-server/src/httpd_daap.c

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/*
* 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 <string.h>
#include <errno.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <regex.h>
#include <limits.h>
#include <stdint.h>
#include <inttypes.h>
#include <ctype.h>
#include <uninorm.h>
#include <event.h>
#include "evhttp/evhttp.h"
#include <avl.h>
#include "logger.h"
#include "db.h"
#include "conffile.h"
#include "misc.h"
#include "httpd.h"
#include "transcode.h"
#include "artwork.h"
#include "httpd_daap.h"
#include "daap_query.h"
#include "dmap_common.h"
/* httpd event base, from httpd.c */
extern struct event_base *evbase_httpd;
/* Session timeout in seconds */
#define DAAP_SESSION_TIMEOUT 0 /* By default the session never times out */
/* We announce this timeout to the client when returning server capabilities */
#define DAAP_SESSION_TIMEOUT_CAPABILITY 1800
/* Update requests refresh interval in seconds */
#define DAAP_UPDATE_REFRESH 0
struct uri_map {
regex_t preg;
char *regexp;
void (*handler)(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query);
};
struct daap_session {
int id;
struct event timeout;
};
struct daap_update_request {
struct evhttp_request *req;
/* 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 avl_tree_t *daap_sessions;
static int next_session_id;
/* Update requests */
static int current_rev;
static struct daap_update_request *update_requests;
/* Session handling */
static int
daap_session_compare(const void *aa, const void *bb)
{
struct daap_session *a = (struct daap_session *)aa;
struct daap_session *b = (struct daap_session *)bb;
if (a->id < b->id)
return -1;
if (a->id > b->id)
return 1;
return 0;
}
static void
daap_session_free(void *item)
{
struct daap_session *s;
s = (struct daap_session *)item;
if (event_initialized(&s->timeout)) evtimer_del(&s->timeout);
free(s);
}
static void
daap_session_kill(struct daap_session *s)
{
avl_delete(daap_sessions, s);
}
static void
daap_session_timeout_cb(int fd, short what, void *arg)
{
struct daap_session *s;
s = (struct daap_session *)arg;
DPRINTF(E_DBG, L_DAAP, "Session %d timed out\n", s->id);
daap_session_kill(s);
}
static struct daap_session *
daap_session_register(void)
{
struct timeval tv;
struct daap_session *s;
avl_node_t *node;
int ret;
s = (struct daap_session *)malloc(sizeof(struct daap_session));
if (!s)
{
DPRINTF(E_LOG, L_DAAP, "Out of memory for DAAP session\n");
return NULL;
}
memset(s, 0, sizeof(struct daap_session));
s->id = next_session_id;
next_session_id++;
if (DAAP_SESSION_TIMEOUT > 0) {
evtimer_set(&s->timeout, daap_session_timeout_cb, s);
event_base_set(evbase_httpd, &s->timeout);
}
node = avl_insert(daap_sessions, s);
if (!node)
{
DPRINTF(E_LOG, L_DAAP, "Could not register DAAP session: %s\n", strerror(errno));
free(s);
return NULL;
}
if (DAAP_SESSION_TIMEOUT > 0) {
evutil_timerclear(&tv);
tv.tv_sec = DAAP_SESSION_TIMEOUT;
ret = evtimer_add(&s->timeout, &tv);
if (ret < 0)
DPRINTF(E_LOG, L_DAAP, "Could not add session timeout event for session %d\n", s->id);
}
return s;
}
struct daap_session *
daap_session_find(struct evhttp_request *req, struct evkeyvalq *query, struct evbuffer *evbuf)
{
struct daap_session needle;
struct timeval tv;
struct daap_session *s;
avl_node_t *node;
const char *param;
int ret;
param = evhttp_find_header(query, "session-id");
if (!param)
{
DPRINTF(E_WARN, L_DAAP, "No session-id specified in request\n");
goto invalid;
}
ret = safe_atoi32(param, &needle.id);
if (ret < 0)
goto invalid;
node = avl_search(daap_sessions, &needle);
if (!node)
{
DPRINTF(E_WARN, L_DAAP, "DAAP session id %d not found\n", needle.id);
goto invalid;
}
s = (struct daap_session *)node->item;
if (DAAP_SESSION_TIMEOUT > 0) {
event_del(&s->timeout);
}
evutil_timerclear(&tv);
tv.tv_sec = DAAP_SESSION_TIMEOUT;
if (DAAP_SESSION_TIMEOUT > 0) {
ret = evtimer_add(&s->timeout, &tv);
if (ret < 0)
DPRINTF(E_LOG, L_DAAP, "Could not add session timeout event for session %d\n", s->id);
}
return s;
invalid:
evhttp_send_error(req, 403, "Forbidden");
return NULL;
}
/* Update requests helpers */
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;
}
}
static void
update_free(struct daap_update_request *ur)
{
if (event_initialized(&ur->timeout))
evtimer_del(&ur->timeout);
free(ur);
}
static void
update_refresh_cb(int fd, short event, void *arg)
{
struct daap_update_request *ur;
struct evbuffer *evbuf;
int ret;
ur = (struct daap_update_request *)arg;
evbuf = evbuffer_new();
if (!evbuf)
{
DPRINTF(E_LOG, L_DAAP, "Could not allocate evbuffer for DAAP update data\n");
return;
}
ret = evbuffer_expand(evbuf, 32);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP update data\n");
return;
}
/* Send back current revision */
dmap_add_container(evbuf, "mupd", 24);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_int(evbuf, "musr", current_rev); /* 12 */
evhttp_connection_set_closecb(ur->req->evcon, NULL, NULL);
httpd_send_reply(ur->req, HTTP_OK, "OK", evbuf);
update_remove(ur);
update_free(ur);
}
static void
update_fail_cb(struct evhttp_connection *evcon, void *arg)
{
struct daap_update_request *ur;
ur = (struct daap_update_request *)arg;
DPRINTF(E_DBG, L_DAAP, "Update request: client closed connection\n");
if (ur->req->evcon)
evhttp_connection_set_closecb(ur->req->evcon, NULL, NULL);
update_remove(ur);
update_free(ur);
}
/* DAAP sort headers helpers */
static struct sort_ctx *
daap_sort_context_new(void)
{
struct sort_ctx *ctx;
int ret;
ctx = (struct sort_ctx *)malloc(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);
ret = u8_normalize(UNINORM_NFD, (uint8_t *)str, len, NULL, &len);
if (!ret)
{
DPRINTF(E_LOG, L_DAAP, "Could not normalize string for sort header\n");
return -1;
}
fl = ret[0];
free(ret);
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 */
}
static void
get_query_params(struct evkeyvalq *query, int *sort_headers, struct query_params *qp)
{
const char *param;
char *ptr;
int low;
int high;
int ret;
low = 0;
high = -1; /* No limit */
param = evhttp_find_header(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;
qp->idx_type = I_SUB;
qp->sort = S_NONE;
param = evhttp_find_header(query, "sort");
if (param)
{
if (strcmp(param, "name") == 0)
qp->sort = S_NAME;
else if (strcmp(param, "album") == 0)
qp->sort = S_ALBUM;
else if (strcmp(param, "artist") == 0)
qp->sort = S_ARTIST;
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 = evhttp_find_header(query, "include-sort-headers");
if (param)
{
if (strcmp(param, "1") == 0)
{
*sort_headers = 1;
DPRINTF(E_DBG, L_DAAP, "Sort headers requested\n");
}
else
DPRINTF(E_DBG, L_DAAP, "Unknown include-sort-headers param: %s\n", param);
}
}
param = evhttp_find_header(query, "query");
if (!param)
param = evhttp_find_header(query, "filter");
if (param)
{
DPRINTF(E_DBG, L_DAAP, "DAAP browse query filter: %s\n", param);
qp->filter = daap_query_parse_sql(param);
if (!qp->filter)
DPRINTF(E_LOG, L_DAAP, "Ignoring improper DAAP query\n");
}
}
static int
parse_meta(struct evhttp_request *req, char *tag, const char *param, const struct dmap_field ***out_meta)
{
const struct dmap_field **meta;
char *ptr;
char *field;
char *metastr;
int nmeta;
int i;
metastr = strdup(param);
if (!metastr)
{
DPRINTF(E_LOG, L_DAAP, "Could not duplicate meta parameter; out of memory\n");
dmap_send_error(req, tag, "Out of memory");
return -1;
}
nmeta = 1;
ptr = metastr;
while ((ptr = strchr(ptr + 1, ',')))
nmeta++;
DPRINTF(E_DBG, L_DAAP, "Asking for %d meta tags\n", nmeta);
meta = (const struct dmap_field **)malloc(nmeta * sizeof(const struct dmap_field *));
if (!meta)
{
DPRINTF(E_LOG, L_DAAP, "Could not allocate meta array; out of memory\n");
dmap_send_error(req, tag, "Out of memory");
nmeta = -1;
goto out;
}
memset(meta, 0, nmeta * sizeof(struct dmap_field *));
field = strtok_r(metastr, ",", &ptr);
for (i = 0; i < nmeta; i++)
{
meta[i] = dmap_find_field(field, strlen(field));
if (!meta[i])
{
DPRINTF(E_WARN, L_DAAP, "Could not find requested meta field '%s'\n", field);
i--;
nmeta--;
}
field = strtok_r(NULL, ",", &ptr);
if (!field)
break;
}
DPRINTF(E_DBG, L_DAAP, "Found %d meta tags\n", nmeta);
*out_meta = meta;
out:
free(metastr);
return nmeta;
}
static void
daap_reply_server_info(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
cfg_t *lib;
char *name;
char *passwd;
const char *clientver;
int mpro;
int apro;
int len;
int ret;
lib = cfg_getsec(cfg, "library");
passwd = cfg_getstr(lib, "password");
name = cfg_getstr(lib, "name");
len = 157 + strlen(name);
ret = evbuffer_expand(evbuf, len);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP server-info reply\n");
dmap_send_error(req, "msrv", "Out of memory");
return;
}
mpro = 2 << 16;
apro = 3 << 16;
clientver = evhttp_find_header(req->input_headers, "Client-DAAP-Version");
if (clientver)
{
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_container(evbuf, "msrv", len - 8);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_int(evbuf, "mpro", mpro); /* 12 */
dmap_add_string(evbuf, "minm", name); /* 8 + strlen(name) */
dmap_add_int(evbuf, "apro", apro); /* 12 */
dmap_add_char(evbuf, "mslr", 1); /* 9 */
dmap_add_int(evbuf, "mstm", DAAP_SESSION_TIMEOUT_CAPABILITY); /* 12 */
dmap_add_char(evbuf, "msal", 1); /* 9 */
dmap_add_char(evbuf, "msau", (passwd) ? 2 : 0); /* 9 */
dmap_add_char(evbuf, "msup", 1); /* 9 */
dmap_add_char(evbuf, "mspi", 1); /* 9 */
dmap_add_char(evbuf, "msex", 1); /* 9 */
dmap_add_char(evbuf, "msix", 1); /* 9 */
dmap_add_char(evbuf, "msbr", 1); /* 9 */
dmap_add_char(evbuf, "msqy", 1); /* 9 */
dmap_add_int(evbuf, "msdc", 1); /* 12 */
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
}
static void
daap_reply_content_codes(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
const struct dmap_field *dmap_fields;
int nfields;
int i;
int len;
int ret;
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);
ret = evbuffer_expand(evbuf, len + 8);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP content-codes reply\n");
dmap_send_error(req, "mccr", "Out of memory");
return;
}
dmap_add_container(evbuf, "mccr", len);
dmap_add_int(evbuf, "mstt", 200);
for (i = 0; i < nfields; i++)
{
len = 12 + 10 + 8 + strlen(dmap_fields[i].desc);
dmap_add_container(evbuf, "mdcl", len);
dmap_add_string(evbuf, "mcnm", dmap_fields[i].tag); /* 12 */
dmap_add_string(evbuf, "mcna", dmap_fields[i].desc); /* 8 + strlen(desc) */
dmap_add_short(evbuf, "mcty", dmap_fields[i].type); /* 10 */
}
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
}
static void
daap_reply_login(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct pairing_info pi;
struct daap_session *s;
const char *ua;
const char *guid;
int ret;
ret = evbuffer_expand(evbuf, 32);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP login reply\n");
dmap_send_error(req, "mlog", "Out of memory");
return;
}
ua = evhttp_find_header(req->input_headers, "User-Agent");
if (!ua)
{
DPRINTF(E_LOG, L_DAAP, "No User-Agent header, rejecting login request\n");
evhttp_send_error(req, 403, "Forbidden");
return;
}
if (strncmp(ua, "Remote", strlen("Remote")) == 0)
{
guid = evhttp_find_header(query, "pairing-guid");
if (!guid)
{
DPRINTF(E_LOG, L_DAAP, "Login attempt with U-A: Remote and no pairing-guid\n");
evhttp_send_error(req, 403, "Forbidden");
return;
}
memset(&pi, 0, sizeof(struct pairing_info));
pi.guid = strdup(guid + 2); /* Skip leading 0X */
ret = db_pairing_fetch_byguid(&pi);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Login attempt with invalid pairing-guid\n");
free_pi(&pi, 1);
evhttp_send_error(req, 403, "Forbidden");
return;
}
DPRINTF(E_INFO, L_DAAP, "Remote '%s' logging in with GUID %s\n", pi.name, pi.guid);
free_pi(&pi, 1);
}
s = daap_session_register();
if (!s)
{
dmap_send_error(req, "mlog", "Could not start session");
return;
}
dmap_add_container(evbuf, "mlog", 24);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_int(evbuf, "mlid", s->id); /* 12 */
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
}
static void
daap_reply_logout(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct daap_session *s;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
daap_session_kill(s);
httpd_send_reply(req, 204, "Logout Successful", evbuf);
}
static void
daap_reply_update(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct timeval tv;
struct daap_session *s;
struct daap_update_request *ur;
const char *param;
int reqd_rev;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
param = evhttp_find_header(query, "revision-number");
if (!param)
{
DPRINTF(E_LOG, 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 insure update */
}
ret = safe_atoi32(param, &reqd_rev);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Parameter revision-number not an integer\n");
dmap_send_error(req, "mupd", "Invalid request");
return;
}
if (reqd_rev == 1) /* Or revision is not valid */
{
ret = evbuffer_expand(evbuf, 32);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP update reply\n");
dmap_send_error(req, "mupd", "Out of memory");
return;
}
/* Send back current revision */
dmap_add_container(evbuf, "mupd", 24);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_int(evbuf, "musr", current_rev); /* 12 */
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
return;
}
/* Else, just let the request hang until we have changes to push back */
ur = (struct daap_update_request *)malloc(sizeof(struct daap_update_request));
if (!ur)
{
DPRINTF(E_LOG, L_DAAP, "Out of memory for update request\n");
dmap_send_error(req, "mupd", "Out of memory");
return;
}
memset(ur, 0, sizeof(struct daap_update_request));
if (DAAP_UPDATE_REFRESH > 0) {
evtimer_set(&ur->timeout, update_refresh_cb, ur);
event_base_set(evbase_httpd, &ur->timeout);
evutil_timerclear(&tv);
tv.tv_sec = DAAP_UPDATE_REFRESH;
ret = evtimer_add(&ur->timeout, &tv);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add update timeout event\n");
dmap_send_error(req, "mupd", "Could not register timer");
update_free(ur);
return;
}
}
/* NOTE: we may need to keep reqd_rev in there too */
ur->req = req;
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.
*/
evhttp_connection_set_closecb(req->evcon, update_fail_cb, ur);
}
static void
daap_reply_activity(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
/* That's so nice, thanks for letting us know */
evhttp_send_reply(req, HTTP_NOCONTENT, "No Content", evbuf);
}
static void
daap_reply_dblist(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct daap_session *s;
cfg_t *lib;
char *name;
int namelen;
int count;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
lib = cfg_getsec(cfg, "library");
name = cfg_getstr(lib, "name");
namelen = strlen(name);
ret = evbuffer_expand(evbuf, 129 + namelen);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP dblist reply\n");
dmap_send_error(req, "avdb", "Out of memory");
return;
}
dmap_add_container(evbuf, "avdb", 121 + namelen);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_char(evbuf, "muty", 0); /* 9 */
dmap_add_int(evbuf, "mtco", 1); /* 12 */
dmap_add_int(evbuf, "mrco", 1); /* 12 */
dmap_add_container(evbuf, "mlcl", 68 + namelen);
dmap_add_container(evbuf, "mlit", 60 + namelen);
dmap_add_int(evbuf, "miid", 1); /* 12 */
dmap_add_long(evbuf, "mper", 1); /* 16 */
dmap_add_string(evbuf, "minm", name); /* 8 + namelen */
count = db_files_get_count();
dmap_add_int(evbuf, "mimc", count); /* 12 */
count = db_pl_get_count();
dmap_add_int(evbuf, "mctc", count); /* 12 */
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
}
static void
daap_reply_songlist_generic(struct evhttp_request *req, struct evbuffer *evbuf, int playlist, struct evkeyvalq *query)
{
struct query_params qp;
struct db_media_file_info dbmfi;
struct evbuffer *song;
struct evbuffer *songlist;
const struct dmap_field **meta;
struct sort_ctx *sctx;
const char *param;
char *tag;
int nmeta;
int sort_headers;
int nsongs;
int transcode;
int ret;
DPRINTF(E_DBG, L_DAAP, "Fetching song list for playlist %d\n", playlist);
if (playlist != -1)
tag = "apso"; /* Songs in playlist */
else
tag = "adbs"; /* Songs in database */
ret = evbuffer_expand(evbuf, 61);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP song list reply\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
songlist = evbuffer_new();
if (!songlist)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP song list\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
/* Start with a big enough evbuffer - it'll expand as needed */
ret = evbuffer_expand(songlist, 4096);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP song list\n");
dmap_send_error(req, tag, "Out of memory");
goto out_list_free;
}
song = evbuffer_new();
if (!song)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP song block\n");
dmap_send_error(req, tag, "Out of memory");
goto out_list_free;
}
/* The buffer will expand if needed */
ret = evbuffer_expand(song, 512);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP song block\n");
dmap_send_error(req, tag, "Out of memory");
goto out_song_free;
}
param = evhttp_find_header(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(req, tag, param, &meta);
if (nmeta < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to parse meta parameter in DAAP query\n");
goto out_song_free;
}
}
else
{
meta = NULL;
nmeta = 0;
}
memset(&qp, 0, sizeof(struct query_params));
get_query_params(query, &sort_headers, &qp);
sctx = NULL;
if (sort_headers)
{
sctx = daap_sort_context_new();
if (!sctx)
{
DPRINTF(E_LOG, L_DAAP, "Could not create sort context\n");
dmap_send_error(req, tag, "Out of memory");
goto out_query_free;
}
}
if (playlist != -1)
{
qp.type = Q_PLITEMS;
qp.id = playlist;
}
else
qp.type = Q_ITEMS;
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_send_error(req, tag, "Could not start query");
if (sort_headers)
daap_sort_context_free(sctx);
goto out_query_free;
}
nsongs = 0;
while (((ret = db_query_fetch_file(&qp, &dbmfi)) == 0) && (dbmfi.id))
{
nsongs++;
transcode = transcode_needed(req->input_headers, dbmfi.codectype);
ret = dmap_encode_file_metadata(songlist, song, &dbmfi, meta, nmeta, 1, transcode);
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_DBG, L_DAAP, "Done with song\n");
}
DPRINTF(E_DBG, L_DAAP, "Done with song list, %d songs\n", nsongs);
if (nmeta > 0)
free(meta);
evbuffer_free(song);
if (qp.filter)
free(qp.filter);
if (ret < 0)
{
if (ret == -100)
dmap_send_error(req, tag, "Out of memory");
else
{
DPRINTF(E_LOG, L_DAAP, "Error fetching results\n");
dmap_send_error(req, tag, "Error fetching query results");
}
db_query_end(&qp);
if (sort_headers)
daap_sort_context_free(sctx);
goto out_list_free;
}
/* Add header to evbuf, add songlist to evbuf */
if (sort_headers)
{
daap_sort_finalize(sctx);
dmap_add_container(evbuf, tag, EVBUFFER_LENGTH(songlist) + EVBUFFER_LENGTH(sctx->headerlist) + 61);
}
else
dmap_add_container(evbuf, tag, EVBUFFER_LENGTH(songlist) + 53);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_char(evbuf, "muty", 0); /* 9 */
dmap_add_int(evbuf, "mtco", qp.results); /* 12 */
dmap_add_int(evbuf, "mrco", nsongs); /* 12 */
dmap_add_container(evbuf, "mlcl", EVBUFFER_LENGTH(songlist)); /* 8 */
db_query_end(&qp);
ret = evbuffer_add_buffer(evbuf, songlist);
evbuffer_free(songlist);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add song list to DAAP song list reply\n");
dmap_send_error(req, tag, "Out of memory");
if (sort_headers)
daap_sort_context_free(sctx);
return;
}
if (sort_headers)
{
dmap_add_container(evbuf, "mshl", EVBUFFER_LENGTH(sctx->headerlist)); /* 8 */
ret = evbuffer_add_buffer(evbuf, sctx->headerlist);
daap_sort_context_free(sctx);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add sort headers to DAAP song list reply\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
}
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
return;
out_query_free:
if (nmeta > 0)
free(meta);
if (qp.filter)
free(qp.filter);
out_song_free:
evbuffer_free(song);
out_list_free:
evbuffer_free(songlist);
}
static void
daap_reply_dbsonglist(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct daap_session *s;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
daap_reply_songlist_generic(req, evbuf, -1, query);
}
static void
daap_reply_plsonglist(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct daap_session *s;
int playlist;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
ret = safe_atoi32(uri[3], &playlist);
if (ret < 0)
{
dmap_send_error(req, "apso", "Invalid playlist ID");
return;
}
daap_reply_songlist_generic(req, evbuf, playlist, query);
}
static void
daap_reply_playlists(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct query_params qp;
struct db_playlist_info dbpli;
struct daap_session *s;
struct evbuffer *playlistlist;
struct evbuffer *playlist;
const struct dmap_field_map *dfm;
const struct dmap_field *df;
const struct dmap_field **meta;
const char *param;
char **strval;
int nmeta;
int npls;
int32_t val;
int i;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
ret = evbuffer_expand(evbuf, 61);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP playlists reply\n");
dmap_send_error(req, "aply", "Out of memory");
return;
}
playlistlist = evbuffer_new();
if (!playlistlist)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP playlist list\n");
dmap_send_error(req, "aply", "Out of memory");
return;
}
/* Start with a big enough evbuffer - it'll expand as needed */
ret = evbuffer_expand(playlistlist, 1024);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP playlist list\n");
dmap_send_error(req, "aply", "Out of memory");
goto out_list_free;
}
playlist = evbuffer_new();
if (!playlist)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP playlist block\n");
dmap_send_error(req, "aply", "Out of memory");
goto out_list_free;
}
/* The buffer will expand if needed */
ret = evbuffer_expand(playlist, 128);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP playlist block\n");
dmap_send_error(req, "aply", "Out of memory");
goto out_pl_free;
}
param = evhttp_find_header(query, "meta");
if (!param)
{
DPRINTF(E_LOG, L_DAAP, "No meta parameter in query, using default\n");
param = default_meta_pl;
}
nmeta = parse_meta(req, "aply", param, &meta);
if (nmeta < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to parse meta parameter in DAAP query\n");
goto out_pl_free;
}
memset(&qp, 0, sizeof(struct query_params));
get_query_params(query, NULL, &qp);
qp.type = Q_PL;
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_send_error(req, "aply", "Could not start query");
goto out_query_free;
}
npls = 0;
while (((ret = db_query_fetch_pl(&qp, &dbpli)) == 0) && (dbpli.id))
{
npls++;
for (i = 0; i < nmeta; i++)
{
df = meta[i];
dfm = df->dfm;
/* dmap.itemcount - always added */
if (dfm == &dfm_dmap_mimc)
continue;
/* com.apple.itunes.smart-playlist - type = 1 AND id != 1 */
if (dfm == &dfm_dmap_aeSP)
{
val = 0;
ret = safe_atoi32(dbpli.type, &val);
if ((ret == 0) && (val == PL_SMART))
{
val = 1;
ret = safe_atoi32(dbpli.id, &val);
if ((ret == 0) && (val != 1))
{
int32_t aePS = 0;
dmap_add_char(playlist, "aeSP", 1);
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) */
val = 0;
ret = safe_atoi32(dbpli.items, &val);
if ((ret == 0) && (val > 0))
dmap_add_int(playlist, "mimc", val);
/* Container ID (mpco) */
dmap_add_int(playlist, "mpco", 0);
/* Base playlist (abpl), id = 1 */
val = 0;
ret = safe_atoi32(dbpli.id, &val);
if ((ret == 0) && (val == 1))
dmap_add_char(playlist, "abpl", 1);
DPRINTF(E_DBG, L_DAAP, "Done with playlist\n");
dmap_add_container(playlistlist, "mlit", EVBUFFER_LENGTH(playlist));
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;
}
}
DPRINTF(E_DBG, L_DAAP, "Done with playlist list, %d playlists\n", npls);
free(meta);
evbuffer_free(playlist);
if (qp.filter)
free(qp.filter);
if (ret < 0)
{
if (ret == -100)
dmap_send_error(req, "aply", "Out of memory");
else
{
DPRINTF(E_LOG, L_DAAP, "Error fetching results\n");
dmap_send_error(req, "aply", "Error fetching query results");
}
db_query_end(&qp);
goto out_list_free;
}
/* Add header to evbuf, add playlistlist to evbuf */
dmap_add_container(evbuf, "aply", EVBUFFER_LENGTH(playlistlist) + 53);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_char(evbuf, "muty", 0); /* 9 */
dmap_add_int(evbuf, "mtco", qp.results); /* 12 */
dmap_add_int(evbuf,"mrco", npls); /* 12 */
dmap_add_container(evbuf, "mlcl", EVBUFFER_LENGTH(playlistlist));
db_query_end(&qp);
ret = evbuffer_add_buffer(evbuf, playlistlist);
evbuffer_free(playlistlist);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add playlist list to DAAP playlists reply\n");
dmap_send_error(req, "aply", "Out of memory");
return;
}
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
return;
out_query_free:
free(meta);
if (qp.filter)
free(qp.filter);
out_pl_free:
evbuffer_free(playlist);
out_list_free:
evbuffer_free(playlistlist);
}
static void
daap_reply_groups(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct query_params qp;
struct db_group_info dbgri;
struct daap_session *s;
struct evbuffer *group;
struct evbuffer *grouplist;
enum query_type group_type;
const struct dmap_field_map *dfm;
const struct dmap_field *df;
const struct dmap_field **meta;
struct sort_ctx *sctx;
const char *param;
char **strval;
int nmeta;
int sort_headers;
int ngrp;
int32_t val;
int i;
int ret;
char *tag;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
param = evhttp_find_header(query, "group-type");
if (strcmp(param, "artists") == 0)
{
tag = "agar";
group_type = Q_GROUP_ARTISTS;
}
else
{
tag = "agal";
group_type = Q_GROUP_ALBUMS;
}
ret = evbuffer_expand(evbuf, 61);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP groups reply\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
grouplist = evbuffer_new();
if (!grouplist)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP group list\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
/* Start with a big enough evbuffer - it'll expand as needed */
ret = evbuffer_expand(grouplist, 1024);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP group list\n");
dmap_send_error(req, tag, "Out of memory");
goto out_list_free;
}
group = evbuffer_new();
if (!group)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP group block\n");
dmap_send_error(req, tag, "Out of memory");
goto out_list_free;
}
/* The buffer will expand if needed */
ret = evbuffer_expand(group, 128);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP group block\n");
dmap_send_error(req, tag, "Out of memory");
goto out_group_free;
}
param = evhttp_find_header(query, "meta");
if (!param)
{
DPRINTF(E_LOG, L_DAAP, "No meta parameter in query, using default\n");
param = default_meta_group;
}
nmeta = parse_meta(req, tag, param, &meta);
if (nmeta < 0)
{
DPRINTF(E_LOG, L_DAAP, "Failed to parse meta parameter in DAAP query\n");
goto out_group_free;
}
memset(&qp, 0, sizeof(struct query_params));
get_query_params(query, &sort_headers, &qp);
qp.type = group_type;
sctx = NULL;
if (sort_headers)
{
sctx = daap_sort_context_new();
if (!sctx)
{
DPRINTF(E_LOG, L_DAAP, "Could not create sort context\n");
dmap_send_error(req, tag, "Out of memory");
goto out_query_free;
}
}
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_send_error(req, tag, "Could not start query");
if (sort_headers)
daap_sort_context_free(sctx);
goto out_query_free;
}
ngrp = 0;
while ((ret = db_query_fetch_group(&qp, &dbgri)) == 0)
{
ngrp++;
for (i = 0; i < nmeta; i++)
{
df = meta[i];
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_DBG, L_DAAP, "Done with meta tag %s (%s)\n", df->desc, *strval);
}
if (sort_headers)
{
ret = daap_sort_build(sctx, dbgri.itemname);
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 (group_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_DBG, L_DAAP, "Done with group\n");
dmap_add_container(grouplist, "mlit", EVBUFFER_LENGTH(group));
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;
}
}
DPRINTF(E_DBG, L_DAAP, "Done with group list, %d groups\n", ngrp);
free(meta);
evbuffer_free(group);
if (qp.filter)
free(qp.filter);
if (ret < 0)
{
if (ret == -100)
dmap_send_error(req, tag, "Out of memory");
else
{
DPRINTF(E_LOG, L_DAAP, "Error fetching results\n");
dmap_send_error(req, tag, "Error fetching query results");
}
db_query_end(&qp);
if (sort_headers)
daap_sort_context_free(sctx);
goto out_list_free;
}
/* Add header to evbuf, add grouplist to evbuf */
if (sort_headers)
{
daap_sort_finalize(sctx);
dmap_add_container(evbuf, tag, EVBUFFER_LENGTH(grouplist) + EVBUFFER_LENGTH(sctx->headerlist) + 61);
}
else
dmap_add_container(evbuf, tag, EVBUFFER_LENGTH(grouplist) + 53);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_char(evbuf, "muty", 0); /* 9 */
dmap_add_int(evbuf, "mtco", qp.results); /* 12 */
dmap_add_int(evbuf,"mrco", ngrp); /* 12 */
dmap_add_container(evbuf, "mlcl", EVBUFFER_LENGTH(grouplist)); /* 8 */
db_query_end(&qp);
ret = evbuffer_add_buffer(evbuf, grouplist);
evbuffer_free(grouplist);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add group list to DAAP groups reply\n");
dmap_send_error(req, tag, "Out of memory");
if (sort_headers)
daap_sort_context_free(sctx);
return;
}
if (sort_headers)
{
dmap_add_container(evbuf, "mshl", EVBUFFER_LENGTH(sctx->headerlist)); /* 8 */
ret = evbuffer_add_buffer(evbuf, sctx->headerlist);
daap_sort_context_free(sctx);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add sort headers to DAAP groups reply\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
}
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
return;
out_query_free:
free(meta);
if (qp.filter)
free(qp.filter);
out_group_free:
evbuffer_free(group);
out_list_free:
evbuffer_free(grouplist);
}
static void
daap_reply_browse(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct query_params qp;
struct daap_session *s;
struct evbuffer *itemlist;
struct sort_ctx *sctx;
char *browse_item;
char *sort_item;
char *tag;
int sort_headers;
int nitems;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
memset(&qp, 0, sizeof(struct query_params));
if (strcmp(uri[3], "artists") == 0)
{
tag = "abar";
qp.type = Q_BROWSE_ARTISTS;
}
else if (strcmp(uri[3], "genres") == 0)
{
tag = "abgn";
qp.type = Q_BROWSE_GENRES;
}
else if (strcmp(uri[3], "albums") == 0)
{
tag = "abal";
qp.type = Q_BROWSE_ALBUMS;
}
else if (strcmp(uri[3], "composers") == 0)
{
tag = "abcp";
qp.type = Q_BROWSE_COMPOSERS;
}
else
{
DPRINTF(E_LOG, L_DAAP, "Invalid DAAP browse request type '%s'\n", uri[3]);
dmap_send_error(req, "abro", "Invalid browse type");
return;
}
ret = evbuffer_expand(evbuf, 52);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DAAP browse reply\n");
dmap_send_error(req, "abro", "Out of memory");
return;
}
itemlist = evbuffer_new();
if (!itemlist)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP browse item list\n");
dmap_send_error(req, "abro", "Out of memory");
return;
}
/* Start with a big enough evbuffer - it'll expand as needed */
ret = evbuffer_expand(itemlist, 512);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not expand evbuffer for DMAP browse item list\n");
dmap_send_error(req, "abro", "Out of memory");
evbuffer_free(itemlist);
return;
}
get_query_params(query, &sort_headers, &qp);
sctx = NULL;
if (sort_headers)
{
sctx = daap_sort_context_new();
if (!sctx)
{
DPRINTF(E_LOG, L_DAAP, "Could not create sort context\n");
dmap_send_error(req, "abro", "Out of memory");
evbuffer_free(itemlist);
if (qp.filter)
free(qp.filter);
return;
}
}
ret = db_query_start(&qp);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not start query\n");
dmap_send_error(req, "abro", "Could not start query");
if (sort_headers)
daap_sort_context_free(sctx);
evbuffer_free(itemlist);
if (qp.filter)
free(qp.filter);
return;
}
nitems = 0;
while (((ret = db_query_fetch_string_sort(&qp, &browse_item, &sort_item)) == 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);
}
if (qp.filter)
free(qp.filter);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Error fetching/building results\n");
dmap_send_error(req, "abro", "Error fetching/building query results");
db_query_end(&qp);
if (sort_headers)
daap_sort_context_free(sctx);
evbuffer_free(itemlist);
return;
}
if (sort_headers)
{
daap_sort_finalize(sctx);
dmap_add_container(evbuf, "abro", EVBUFFER_LENGTH(itemlist) + EVBUFFER_LENGTH(sctx->headerlist) + 52);
}
else
dmap_add_container(evbuf, "abro", EVBUFFER_LENGTH(itemlist) + 44);
dmap_add_int(evbuf, "mstt", 200); /* 12 */
dmap_add_int(evbuf, "mtco", qp.results); /* 12 */
dmap_add_int(evbuf, "mrco", nitems); /* 12 */
dmap_add_container(evbuf, tag, EVBUFFER_LENGTH(itemlist)); /* 8 */
db_query_end(&qp);
ret = evbuffer_add_buffer(evbuf, itemlist);
evbuffer_free(itemlist);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add item list to DAAP browse reply\n");
dmap_send_error(req, tag, "Out of memory");
if (sort_headers)
daap_sort_context_free(sctx);
return;
}
if (sort_headers)
{
dmap_add_container(evbuf, "mshl", EVBUFFER_LENGTH(sctx->headerlist)); /* 8 */
ret = evbuffer_add_buffer(evbuf, sctx->headerlist);
daap_sort_context_free(sctx);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add sort headers to DAAP browse reply\n");
dmap_send_error(req, tag, "Out of memory");
return;
}
}
httpd_send_reply(req, HTTP_OK, "OK", evbuf);
}
/* NOTE: We only handle artwork at the moment */
static void
daap_reply_extra_data(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
char clen[32];
struct daap_session *s;
const char *param;
char *ctype;
int id;
int max_w;
int max_h;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
ret = safe_atoi32(uri[3], &id);
if (ret < 0)
{
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
param = evhttp_find_header(query, "mw");
if (!param)
{
DPRINTF(E_LOG, L_DAAP, "Request for artwork without mw parameter\n");
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
ret = safe_atoi32(param, &max_w);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not convert mw parameter to integer\n");
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
param = evhttp_find_header(query, "mh");
if (!param)
{
DPRINTF(E_LOG, L_DAAP, "Request for artwork without mh parameter\n");
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
ret = safe_atoi32(param, &max_h);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not convert mh parameter to integer\n");
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
if (strcmp(uri[2], "groups") == 0)
ret = artwork_get_group(id, max_w, max_h, ART_CAN_PNG | ART_CAN_JPEG, evbuf);
else if (strcmp(uri[2], "items") == 0)
ret = artwork_get_item(id, max_w, max_h, ART_CAN_PNG | ART_CAN_JPEG, evbuf);
switch (ret)
{
case ART_FMT_PNG:
ctype = "image/png";
break;
case ART_FMT_JPEG:
ctype = "image/jpeg";
break;
default:
if (EVBUFFER_LENGTH(evbuf) > 0)
evbuffer_drain(evbuf, EVBUFFER_LENGTH(evbuf));
goto no_artwork;
}
evhttp_remove_header(req->output_headers, "Content-Type");
evhttp_add_header(req->output_headers, "Content-Type", ctype);
snprintf(clen, sizeof(clen), "%ld", (long)EVBUFFER_LENGTH(evbuf));
evhttp_add_header(req->output_headers, "Content-Length", clen);
/* No gzip compression for artwork */
evhttp_send_reply(req, HTTP_OK, "OK", evbuf);
return;
no_artwork:
evhttp_send_reply(req, HTTP_NOCONTENT, "No Content", evbuf);
}
static void
daap_stream(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
struct daap_session *s;
int id;
int ret;
s = daap_session_find(req, query, evbuf);
if (!s)
return;
ret = safe_atoi32(uri[3], &id);
if (ret < 0)
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
else
httpd_stream_file(req, id);
}
static char *
daap_fix_request_uri(struct evhttp_request *req, char *uri)
{
char *ret;
/* iTunes 9 gives us an absolute request-uri like
* daap://10.1.1.20:3689/server-info
*/
if (strncmp(uri, "daap://", strlen("daap://")) != 0)
return uri;
/* Clear the proxy request flag set by evhttp
* due to the request URI being absolute.
* It has side-effects on Connection: keep-alive
*/
req->flags &= ~EVHTTP_PROXY_REQUEST;
ret = strchr(uri + strlen("daap://"), '/');
if (!ret)
{
DPRINTF(E_LOG, L_DAAP, "Malformed DAAP Request URI '%s'\n", uri);
return NULL;
}
return ret;
}
#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 void
daap_reply_dmap_test(struct evhttp_request *req, struct evbuffer *evbuf, char **uri, struct evkeyvalq *query)
{
char buf[64];
struct evbuffer *test;
int ret;
test = evbuffer_new();
if (!test)
{
DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DMAP test\n");
dmap_send_error(req, dmap_TEST.tag, "Out of memory");
return;
}
/* 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(evbuf, dmap_TEST.tag, EVBUFFER_LENGTH(test));
ret = evbuffer_add_buffer(evbuf, test);
evbuffer_free(test);
if (ret < 0)
{
DPRINTF(E_LOG, L_DAAP, "Could not add test results to DMAP test reply\n");
dmap_send_error(req, dmap_TEST.tag, "Out of memory");
return;
}
evhttp_send_reply(req, HTTP_OK, "OK", evbuf);
}
#endif /* DMAP_TEST */
static struct 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
}
};
void
daap_request(struct evhttp_request *req)
{
char *full_uri;
char *uri;
char *ptr;
char *uri_parts[7];
struct evbuffer *evbuf;
struct evkeyvalq query;
const char *ua;
cfg_t *lib;
char *libname;
char *passwd;
int handler;
int ret;
int i;
memset(&query, 0, sizeof(struct evkeyvalq));
full_uri = httpd_fixup_uri(req);
if (!full_uri)
{
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
ptr = daap_fix_request_uri(req, full_uri);
if (!ptr)
{
free(full_uri);
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
if (ptr != full_uri)
{
uri = strdup(ptr);
free(full_uri);
if (!uri)
{
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
full_uri = uri;
}
ptr = strchr(full_uri, '?');
if (ptr)
*ptr = '\0';
uri = strdup(full_uri);
if (!uri)
{
free(full_uri);
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
return;
}
if (ptr)
*ptr = '?';
ptr = uri;
uri = evhttp_decode_uri(uri);
free(ptr);
DPRINTF(E_DBG, L_DAAP, "DAAP request: %s\n", full_uri);
handler = -1;
for (i = 0; daap_handlers[i].handler; i++)
{
ret = regexec(&daap_handlers[i].preg, uri, 0, NULL, 0);
if (ret == 0)
{
handler = i;
break;
}
}
if (handler < 0)
{
DPRINTF(E_LOG, L_DAAP, "Unrecognized DAAP request\n");
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
free(uri);
free(full_uri);
return;
}
/* Check authentication */
lib = cfg_getsec(cfg, "library");
passwd = cfg_getstr(lib, "password");
/* No authentication for these URIs */
if ((strcmp(uri, "/server-info") == 0)
|| (strcmp(uri, "/logout") == 0)
|| (strncmp(uri, "/databases/1/items/", strlen("/databases/1/items/")) == 0))
passwd = NULL;
/* Waive HTTP authentication for Remote
* Remotes are authentified by their pairing-guid; DAAP queries require a
* valid session-id that Remote can only obtain if its pairing-guid is in
* our database. So HTTP authentication is waived for Remote.
*/
ua = evhttp_find_header(req->input_headers, "User-Agent");
if ((ua) && (strncmp(ua, "Remote", strlen("Remote")) == 0))
passwd = NULL;
if (passwd)
{
libname = cfg_getstr(lib, "name");
DPRINTF(E_DBG, L_HTTPD, "Checking authentication for library '%s'\n", libname);
/* We don't care about the username */
ret = httpd_basic_auth(req, NULL, passwd, libname);
if (ret != 0)
{
free(uri);
free(full_uri);
return;
}
DPRINTF(E_DBG, L_HTTPD, "Library authentication successful\n");
}
memset(uri_parts, 0, sizeof(uri_parts));
uri_parts[0] = strtok_r(uri, "/", &ptr);
for (i = 1; (i < sizeof(uri_parts) / sizeof(uri_parts[0])) && uri_parts[i - 1]; i++)
{
uri_parts[i] = strtok_r(NULL, "/", &ptr);
}
if (!uri_parts[0] || uri_parts[i - 1] || (i < 2))
{
DPRINTF(E_LOG, L_DAAP, "DAAP URI has too many/few components (%d)\n", (uri_parts[0]) ? i : 0);
evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
free(uri);
free(full_uri);
return;
}
evbuf = evbuffer_new();
if (!evbuf)
{
DPRINTF(E_LOG, L_DAAP, "Could not allocate evbuffer for DAAP reply\n");
evhttp_send_error(req, HTTP_SERVUNAVAIL, "Internal Server Error");
free(uri);
free(full_uri);
return;
}
evhttp_parse_query(full_uri, &query);
evhttp_add_header(req->output_headers, "Accept-Ranges", "bytes");
evhttp_add_header(req->output_headers, "DAAP-Server", "forked-daapd/" 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.
*/
evhttp_add_header(req->output_headers, "Content-Type", "application/x-dmap-tagged");
daap_handlers[handler].handler(req, evbuf, uri_parts, &query);
evbuffer_free(evbuf);
evhttp_clear_headers(&query);
free(uri);
free(full_uri);
}
int
daap_is_request(struct evhttp_request *req, char *uri)
{
uri = daap_fix_request_uri(req, uri);
if (!uri)
return 0;
if (strncmp(uri, "/databases/", strlen("/databases/")) == 0)
return 1;
if (strcmp(uri, "/databases") == 0)
return 1;
if (strcmp(uri, "/server-info") == 0)
return 1;
if (strcmp(uri, "/content-codes") == 0)
return 1;
if (strcmp(uri, "/login") == 0)
return 1;
if (strcmp(uri, "/update") == 0)
return 1;
if (strcmp(uri, "/activity") == 0)
return 1;
if (strcmp(uri, "/logout") == 0)
return 1;
#ifdef DMAP_TEST
if (strcmp(uri, "/dmap-test") == 0)
return 1;
#endif
return 0;
}
int
daap_init(void)
{
char buf[64];
int i;
int ret;
next_session_id = 100; /* gotta start somewhere, right? */
current_rev = 2;
update_requests = NULL;
for (i = 0; daap_handlers[i].handler; i++)
{
ret = regcomp(&daap_handlers[i].preg, daap_handlers[i].regexp, REG_EXTENDED | REG_NOSUB);
if (ret != 0)
{
regerror(ret, &daap_handlers[i].preg, buf, sizeof(buf));
DPRINTF(E_FATAL, L_DAAP, "DAAP init failed; regexp error: %s\n", buf);
return -1;
}
}
daap_sessions = avl_alloc_tree(daap_session_compare, daap_session_free);
if (!daap_sessions)
{
DPRINTF(E_FATAL, L_DAAP, "DAAP init could not allocate DAAP sessions AVL tree\n");
goto daap_avl_alloc_fail;
}
return 0;
daap_avl_alloc_fail:
for (i = 0; daap_handlers[i].handler; i++)
regfree(&daap_handlers[i].preg);
return -1;
}
void
daap_deinit(void)
{
struct daap_update_request *ur;
int i;
for (i = 0; daap_handlers[i].handler; i++)
regfree(&daap_handlers[i].preg);
avl_free_tree(daap_sessions);
for (ur = update_requests; update_requests; ur = update_requests)
{
update_requests = ur->next;
if (ur->req->evcon)
{
evhttp_connection_set_closecb(ur->req->evcon, NULL, NULL);
evhttp_connection_free(ur->req->evcon);
}
update_free(ur);
}
}
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