/* * Copyright (C) 2009-2011 Julien BLACHE * Copyright (C) 2010 Kai Elwert * * Adapted from mt-daapd: * Copyright (C) 2003-2007 Ron Pedde * * 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 #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #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" #ifdef HAVE_LIBEVENT2 # include #endif /* httpd event base, from httpd.c */ extern struct event_base *evbase_httpd; /* First session id to use */ #define DAAP_BASE_SESSION_ID 100 /* 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; char *user_agent; 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); if (s->user_agent) free(s->user_agent); 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(const char *user_agent, int request_session_id) { 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)); if (!request_session_id) { s->id = next_session_id; next_session_id++; } else if (request_session_id < DAAP_BASE_SESSION_ID) { s->id = request_session_id; if (avl_search(daap_sessions, s)) { DPRINTF(E_LOG, L_DAAP, "Session id requested in login (%d) is not available\n", request_session_id); return NULL; } } else { DPRINTF(E_LOG, L_DAAP, "Session id requested in login (%d) must be below %d\n", request_session_id, DAAP_BASE_SESSION_ID); return NULL; } if (user_agent) s->user_agent = strdup(user_agent); 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)); if (user_agent) free(s->user_agent); 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 evhttp_connection *evcon; 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 */ evcon = evhttp_request_get_connection(ur->req); evhttp_connection_set_closecb(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 evhttp_connection *evc; struct daap_update_request *ur; ur = (struct daap_update_request *)arg; DPRINTF(E_DBG, L_DAAP, "Update request: client closed connection\n"); evc = evhttp_request_get_connection(ur->req); if (evc) evhttp_connection_set_closecb(evc, 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); if (len > 0) { 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); } 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 */ } /* 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 in Remote */ static void user_agent_filter(const char *user_agent, struct query_params *qp) { char *filter; char *buffer; int len; if (!user_agent) return; // Valgrind doesn't like strlen(filter) below, so instead we allocate 128 bytes // to hold the string and the leading " AND ". Remember to adjust the 128 if // you define strings here that will be too large for the buffer. if (strcasestr(user_agent, "itunes")) filter = strdup("(f.data_kind = 0)"); // Only real files else if (strcasestr(user_agent, "daap")) filter = strdup("(f.data_kind = 0)"); // Only real files else if (strcasestr(user_agent, "remote")) filter = strdup("(f.data_kind <> 1)"); // No internet radio else if (strcasestr(user_agent, "android")) filter = strdup("(f.data_kind <> 1)"); // No internet radio else return; if (qp->filter) { len = strlen(qp->filter) + 128; buffer = (char *)malloc(len); snprintf(buffer, len, "%s AND %s", qp->filter, filter); free(qp->filter); qp->filter = strdup(buffer); free(buffer); } else qp->filter = strdup(filter); DPRINTF(E_DBG, L_DAAP, "SQL filter w/client mod: %s\n", qp->filter); free(filter); } 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 if (strcmp(param, "releasedate") == 0) qp->sort = S_NAME; 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; int n; 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, ',')) && (strlen(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++) { for (n = 0; (n < i) && (strcmp(field, meta[n]->desc) != 0); n++); if (n == 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--; } } else { DPRINTF(E_WARN, L_DAAP, "Parser will ignore duplicate occurrence of 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) { struct evbuffer *content; struct evkeyvalq *headers; cfg_t *lib; char *name; char *passwd; const char *clientver; int mpro; int apro; lib = cfg_getsec(cfg, "library"); passwd = cfg_getstr(lib, "password"); name = cfg_getstr(lib, "name"); content = evbuffer_new(); if (!content) { DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DAAP server-info reply\n"); dmap_send_error(req, "msrv", "Out of memory"); return; } mpro = 2 << 16 | 10; apro = 3 << 16 | 12; headers = evhttp_request_get_input_headers(req); clientver = evhttp_find_header(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_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 dmap_add_short(content, "asgr", 3); // daap.supportsgroups // 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", 1); // dmap.databasescount // Create container dmap_add_container(evbuf, "msrv", EVBUFFER_LENGTH(content)); evbuffer_add_buffer(evbuf, content); evbuffer_free(content); 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; struct evkeyvalq *headers; const char *ua; const char *param; int request_session_id; 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; } headers = evhttp_request_get_input_headers(req); ua = evhttp_find_header(headers, "User-Agent"); if (ua && (strncmp(ua, "Remote", strlen("Remote")) == 0)) { param = evhttp_find_header(query, "pairing-guid"); if (!param) { 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(param + 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); } param = evhttp_find_header(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; s = daap_session_register(ua, request_session_id); 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; struct evhttp_connection *evcon; 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. */ evcon = evhttp_request_get_connection(req); if (evcon) evhttp_connection_set_closecb(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 evbuffer *content; struct daap_session *s; cfg_t *lib; char *name; int count; s = daap_session_find(req, query, evbuf); if (!s) return; lib = cfg_getsec(cfg, "library"); name = cfg_getstr(lib, "name"); content = evbuffer_new(); if (!content) { DPRINTF(E_LOG, L_DAAP, "Could not create evbuffer for DAAP dblist reply\n"); dmap_send_error(req, "avdb", "Out of memory"); return; } dmap_add_int(content, "miid", 1); dmap_add_long(content, "mper", 1); dmap_add_int(content, "mdbk", 1); dmap_add_int(content, "aeCs", 1); dmap_add_string(content, "minm", name); count = db_files_get_count(); dmap_add_int(content, "mimc", count); count = db_pl_get_count(); // TODO Don't count empty smart playlists, because they get excluded in aply dmap_add_int(content, "mctc", count); // dmap_add_int(content, "aeMk", 0x405); // com.apple.itunes.extended-media-kind (OR of all in library) dmap_add_int(content, "meds", 3); // Create container dmap_add_container(evbuf, "avdb", EVBUFFER_LENGTH(content) + 61); 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", EVBUFFER_LENGTH(content) + 8); /* 8 */ dmap_add_container(evbuf, "mlit", EVBUFFER_LENGTH(content)); /* 8 */ evbuffer_add_buffer(evbuf, content); evbuffer_free(content); 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 daap_session *s; struct query_params qp; struct db_media_file_info dbmfi; struct evbuffer *song; struct evbuffer *songlist; struct evkeyvalq *headers; 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; s = daap_session_find(req, query, evbuf); if (!s) return; 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); if (playlist == -1) user_agent_filter(s->user_agent, &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++; headers = evhttp_request_get_input_headers(req); transcode = transcode_needed(headers, dbmfi.codectype); ret = dmap_encode_file_metadata(songlist, song, &dbmfi, meta, nmeta, sort_headers, 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) { 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) { int playlist; int ret; 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 plid; int32_t pltype; int32_t plitems; 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; qp.sort = S_PLAYLIST; 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)) { 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; /* Don't add empty smart playlists */ if ((plid > 1) && (pltype == 1) && (plitems == 0)) continue; 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) { if ((pltype == PL_SMART) && (plid != 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) */ if (plitems > 0) dmap_add_int(playlist, "mimc", plitems); /* Container ID (mpco) */ dmap_add_int(playlist, "mpco", 0); /* Base playlist (abpl), id = 1 */ if (plid == 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; 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; memset(&qp, 0, sizeof(struct query_params)); get_query_params(query, &sort_headers, &qp); user_agent_filter(s->user_agent, &qp); param = evhttp_find_header(query, "group-type"); if (strcmp(param, "artists") == 0) { tag = "agar"; qp.type = Q_GROUP_ARTISTS; qp.sort = S_ARTIST; } else { tag = "agal"; qp.type = Q_GROUP_ALBUMS; qp.sort = S_ALBUM; } 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"); goto out_qfilter_free; } 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"); goto out_qfilter_free; } /* 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; } 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) { /* Don't add item if no name (eg blank album name) */ if (strlen(dbgri.itemname) == 0) continue; 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_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_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); out_group_free: evbuffer_free(group); out_list_free: evbuffer_free(grouplist); out_qfilter_free: if (qp.filter) free(qp.filter); } 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)); get_query_params(query, &sort_headers, &qp); user_agent_filter(s->user_agent, &qp); if (strcmp(uri[3], "artists") == 0) { tag = "abar"; qp.type = Q_BROWSE_ARTISTS; qp.sort = S_ARTIST; } else if (strcmp(uri[3], "albums") == 0) { tag = "abal"; qp.type = Q_BROWSE_ALBUMS; qp.sort = S_ALBUM; } else if (strcmp(uri[3], "genres") == 0) { tag = "abgn"; qp.type = Q_BROWSE_GENRES; } 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"); goto out_qfilter_free; } 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"); goto out_qfilter_free; } 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"); goto out_qfilter_free; } /* 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"); goto out_itemlist_free; } 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"); goto out_itemlist_free; } } 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"); goto out_sort_headers_free; } 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 (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); goto out_sort_headers_free; } 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); 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"); goto out_sort_headers_free; } if (sort_headers) { dmap_add_container(evbuf, "mshl", EVBUFFER_LENGTH(sctx->headerlist)); /* 8 */ ret = evbuffer_add_buffer(evbuf, sctx->headerlist); 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"); goto out_sort_headers_free; } } httpd_send_reply(req, HTTP_OK, "OK", evbuf); out_sort_headers_free: if (sort_headers) daap_sort_context_free(sctx); out_itemlist_free: evbuffer_free(itemlist); out_qfilter_free: if (qp.filter) free(qp.filter); } /* 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; struct evkeyvalq *headers; 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; } if (evhttp_find_header(query, "mw") && evhttp_find_header(query, "mh")) { param = evhttp_find_header(query, "mw"); 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"); 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; } } else { DPRINTF(E_DBG, L_DAAP, "Request for artwork without mw/mh parameter\n"); max_w = 0; max_h = 0; } 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; } headers = evhttp_request_get_output_headers(req); evhttp_remove_header(headers, "Content-Type"); evhttp_add_header(headers, "Content-Type", ctype); snprintf(clen, sizeof(clen), "%ld", (long)EVBUFFER_LENGTH(evbuf)); evhttp_add_header(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; struct evkeyvalq *headers; 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. */ headers = evhttp_request_get_input_headers(req); ua = evhttp_find_header(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); headers = evhttp_request_get_output_headers(req); evhttp_add_header(headers, "Accept-Ranges", "bytes"); evhttp_add_header(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/ Content-Type as expected by clients like Front Row. */ evhttp_add_header(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 = DAAP_BASE_SESSION_ID; 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; struct evhttp_connection *evcon; 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; evcon = evhttp_request_get_connection(ur->req); if (evcon) { evhttp_connection_set_closecb(evcon, NULL, NULL); evhttp_connection_free(evcon); } update_free(ur); } }