* This file is part of DisOrder.
* Copyright (C) 2004-2008 Richard Kettlewell
*
- * This program is free software; you can redistribute it and/or modify
+ * 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
+ * the Free Software Foundation, either version 3 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.
- *
+ * 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
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "disorder-server.h"
int pf;
};
+struct conn;
+
+/** @brief Signature for line reader callback
+ * @param c Connection
+ * @param line Line
+ * @return 0 if incomplete, 1 if complete
+ *
+ * @p line is 0-terminated and excludes the newline. It points into the
+ * input buffer so will become invalid shortly.
+ */
+typedef int line_reader_type(struct conn *c,
+ char *line);
+
+/** @brief Signature for with-body command callbacks
+ * @param c Connection
+ * @param body List of body lines
+ * @param nbody Number of body lines
+ * @param u As passed to fetch_body()
+ * @return 0 to suspend input, 1 if complete
+ *
+ * The body strings are allocated (so survive indefinitely) and don't include
+ * newlines.
+ */
+typedef int body_callback_type(struct conn *c,
+ char **body,
+ int nbody,
+ void *u);
+
/** @brief One client connection */
struct conn {
/** @brief Read commands from here */
struct conn *next;
/** @brief True if pending rescan had 'wait' set */
int rescan_wait;
+ /** @brief Playlist that this connection locks */
+ const char *locked_playlist;
+ /** @brief When that playlist was locked */
+ time_t locked_when;
+ /** @brief Line reader function */
+ line_reader_type *line_reader;
+ /** @brief Called when command body has been read */
+ body_callback_type *body_callback;
+ /** @brief Passed to @c body_callback */
+ void *body_u;
+ /** @brief Accumulating body */
+ struct vector body[1];
};
/** @brief Linked list of connections */
size_t bytes,
int eof,
void *u);
+static int c_playlist_set_body(struct conn *c,
+ char **body,
+ int nbody,
+ void *u);
+static int fetch_body(struct conn *c,
+ body_callback_type body_callback,
+ void *u);
+static int body_line(struct conn *c, char *line);
+static int command(struct conn *c, char *line);
static const char *noyes[] = { "no", "yes" };
sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
return 1;
}
- q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
+ q = queue_add(track, c->who, WHERE_BEFORE_RANDOM, origin_picked);
queue_write();
/* If we added the first track, and something is playing, then prepare the
* new track. If nothing is playing then we don't bother as it wouldn't gain
c->lo = 0;
return;
}
- /* user-* messages are restricted */
- if(!strncmp(msg, "user-", 5)) {
+ /* user_* messages are restricted */
+ if(!strncmp(msg, "user_", 5)) {
/* They are only sent to admin users */
if(!(c->rights & RIGHT_ADMIN))
return;
return 1;
}
-static int c_tags(struct conn *c,
- char attribute((unused)) **vec,
- int attribute((unused)) nvec) {
- char **tags = trackdb_alltags();
-
- sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
- while(*tags) {
+static int list_response(struct conn *c,
+ const char *reply,
+ char **list) {
+ sink_printf(ev_writer_sink(c->w), "253 %s\n", reply);
+ while(*list) {
sink_printf(ev_writer_sink(c->w), "%s%s\n",
- **tags == '.' ? "." : "", *tags);
- ++tags;
+ **list == '.' ? "." : "", *list);
+ ++list;
}
sink_writes(ev_writer_sink(c->w), ".\n");
return 1; /* completed */
}
+static int c_tags(struct conn *c,
+ char attribute((unused)) **vec,
+ int attribute((unused)) nvec) {
+ return list_response(c, "Tag list follows", trackdb_alltags());
+}
+
static int c_set_global(struct conn *c,
char **vec,
int attribute((unused)) nvec) {
/* Notify any log connections */
if(d->lo)
sink_printf(ev_writer_sink(d->w),
- "%"PRIxMAX" rights-changed %s\n",
+ "%"PRIxMAX" rights_changed %s\n",
(uintmax_t)time(0),
- new_rights);
+ quoteutf8(new_rights));
}
}
}
static int c_users(struct conn *c,
char attribute((unused)) **vec,
int attribute((unused)) nvec) {
- /* TODO de-dupe with c_tags */
- char **users = trackdb_listusers();
-
- sink_writes(ev_writer_sink(c->w), "253 User list follows\n");
- while(*users) {
- sink_printf(ev_writer_sink(c->w), "%s%s\n",
- **users == '.' ? "." : "", *users);
- ++users;
- }
- sink_writes(ev_writer_sink(c->w), ".\n");
- return 1; /* completed */
+ return list_response(c, "User list follows", trackdb_listusers());
}
/** @brief Base64 mapping table for confirmation strings
sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
return 1;
}
- /* TODO use email_valid() */
if(!(email = kvp_get(k, "email"))
- || !strchr(email, '@')) {
+ || !email_valid(email)) {
error(0, "user '%s' has no valid email address", vec[0]);
sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
return 1;
return 1;
}
+static int c_adopt(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ struct queue_entry *q;
+
+ if(!c->who) {
+ sink_writes(ev_writer_sink(c->w), "550 no identity\n");
+ return 1;
+ }
+ if(!(q = queue_find(vec[0]))) {
+ sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
+ return 1;
+ }
+ if(q->origin != origin_random) {
+ sink_writes(ev_writer_sink(c->w), "550 not a random track\n");
+ return 1;
+ }
+ q->origin = origin_adopted;
+ q->submitter = xstrdup(c->who);
+ eventlog("adopted", q->id, q->submitter, (char *)0);
+ queue_write();
+ sink_writes(ev_writer_sink(c->w), "250 OK\n");
+ return 1;
+}
+
+static int playlist_response(struct conn *c,
+ int err) {
+ switch(err) {
+ case 0:
+ assert(!"cannot cope with success");
+ case EACCES:
+ sink_writes(ev_writer_sink(c->w), "550 Access denied\n");
+ break;
+ case EINVAL:
+ sink_writes(ev_writer_sink(c->w), "550 Invalid playlist name\n");
+ break;
+ case ENOENT:
+ sink_writes(ev_writer_sink(c->w), "555 No such playlist\n");
+ break;
+ default:
+ sink_writes(ev_writer_sink(c->w), "550 Error accessing playlist\n");
+ break;
+ }
+ return 1;
+}
+
+static int c_playlist_get(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ char **tracks;
+ int err;
+
+ if(!(err = trackdb_playlist_get(vec[0], c->who, &tracks, 0, 0)))
+ return list_response(c, "Playlist contents follows", tracks);
+ else
+ return playlist_response(c, err);
+}
+
+static int c_playlist_set(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ return fetch_body(c, c_playlist_set_body, vec[0]);
+}
+
+static int c_playlist_set_body(struct conn *c,
+ char **body,
+ int nbody,
+ void *u) {
+ const char *playlist = u;
+ int err;
+
+ if(!c->locked_playlist
+ || strcmp(playlist, c->locked_playlist)) {
+ sink_writes(ev_writer_sink(c->w), "550 Playlist is not locked\n");
+ return 1;
+ }
+ if(!(err = trackdb_playlist_set(playlist, c->who,
+ body, nbody, 0))) {
+ sink_printf(ev_writer_sink(c->w), "250 OK\n");
+ return 1;
+ } else
+ return playlist_response(c, err);
+}
+
+static int c_playlist_get_share(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ char *share;
+ int err;
+
+ if(!(err = trackdb_playlist_get(vec[0], c->who, 0, 0, &share))) {
+ sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(share));
+ return 1;
+ } else
+ return playlist_response(c, err);
+}
+
+static int c_playlist_set_share(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ int err;
+
+ if(!(err = trackdb_playlist_set(vec[0], c->who, 0, 0, vec[1]))) {
+ sink_printf(ev_writer_sink(c->w), "250 OK\n");
+ return 1;
+ } else
+ return playlist_response(c, err);
+}
+
+static int c_playlists(struct conn *c,
+ char attribute((unused)) **vec,
+ int attribute((unused)) nvec) {
+ char **p;
+
+ trackdb_playlist_list(c->who, &p, 0);
+ return list_response(c, "List of playlists follows", p);
+}
+
+static int c_playlist_delete(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ int err;
+
+ if(!(err = trackdb_playlist_delete(vec[0], c->who))) {
+ sink_writes(ev_writer_sink(c->w), "250 OK\n");
+ return 1;
+ } else
+ return playlist_response(c, err);
+}
+
+static int c_playlist_lock(struct conn *c,
+ char **vec,
+ int attribute((unused)) nvec) {
+ int err;
+ struct conn *cc;
+
+ /* Check we're allowed to modify this playlist */
+ if((err = trackdb_playlist_set(vec[0], c->who, 0, 0, 0)))
+ return playlist_response(c, err);
+ /* If we hold a lock don't allow a new one */
+ if(c->locked_playlist) {
+ sink_writes(ev_writer_sink(c->w), "550 Already holding a lock\n");
+ return 1;
+ }
+ /* See if some other connection locks the same playlist */
+ for(cc = connections; cc; cc = cc->next)
+ if(cc->locked_playlist && !strcmp(cc->locked_playlist, vec[0]))
+ break;
+ if(cc) {
+ /* TODO: implement config->playlist_lock_timeout */
+ sink_writes(ev_writer_sink(c->w), "550 Already locked\n");
+ return 1;
+ }
+ c->locked_playlist = xstrdup(vec[0]);
+ time(&c->locked_when);
+ sink_writes(ev_writer_sink(c->w), "250 Acquired lock\n");
+ return 1;
+}
+
+static int c_playlist_unlock(struct conn *c,
+ char attribute((unused)) **vec,
+ int attribute((unused)) nvec) {
+ if(!c->locked_playlist) {
+ sink_writes(ev_writer_sink(c->w), "550 Not holding a lock\n");
+ return 1;
+ }
+ c->locked_playlist = 0;
+ sink_writes(ev_writer_sink(c->w), "250 Released lock\n");
+ return 1;
+}
+
static const struct command {
/** @brief Command name */
const char *name;
rights_type rights;
} commands[] = {
{ "adduser", 2, 3, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL },
+ { "adopt", 1, 1, c_adopt, RIGHT_PLAY },
{ "allfiles", 0, 2, c_allfiles, RIGHT_READ },
{ "confirm", 1, 1, c_confirm, 0 },
{ "cookie", 1, 1, c_cookie, 0 },
{ "pause", 0, 0, c_pause, RIGHT_PAUSE },
{ "play", 1, 1, c_play, RIGHT_PLAY },
{ "playing", 0, 0, c_playing, RIGHT_READ },
+ { "playlist-delete", 1, 1, c_playlist_delete, RIGHT_PLAY },
+ { "playlist-get", 1, 1, c_playlist_get, RIGHT_READ },
+ { "playlist-get-share", 1, 1, c_playlist_get_share, RIGHT_READ },
+ { "playlist-lock", 1, 1, c_playlist_lock, RIGHT_PLAY },
+ { "playlist-set", 1, 1, c_playlist_set, RIGHT_PLAY },
+ { "playlist-set-share", 2, 2, c_playlist_set_share, RIGHT_PLAY },
+ { "playlist-unlock", 0, 0, c_playlist_unlock, RIGHT_PLAY },
+ { "playlists", 0, 0, c_playlists, RIGHT_READ },
{ "prefs", 1, 1, c_prefs, RIGHT_READ },
{ "queue", 0, 0, c_queue, RIGHT_READ },
{ "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS },
{ "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME }
};
+/** @brief Fetch a command body
+ * @param c Connection
+ * @param body_callback Called with body
+ * @param u Passed to body_callback
+ * @return 1
+ */
+static int fetch_body(struct conn *c,
+ body_callback_type body_callback,
+ void *u) {
+ assert(c->line_reader == command);
+ c->line_reader = body_line;
+ c->body_callback = body_callback;
+ c->body_u = u;
+ vector_init(c->body);
+ return 1;
+}
+
+/** @brief @ref line_reader_type callback for command body lines
+ * @param c Connection
+ * @param line Line
+ * @return 1 if complete, 0 if incomplete
+ *
+ * Called from reader_callback().
+ */
+static int body_line(struct conn *c,
+ char *line) {
+ if(*line == '.') {
+ ++line;
+ if(!*line) {
+ /* That's the lot */
+ c->line_reader = command;
+ vector_terminate(c->body);
+ return c->body_callback(c, c->body->vec, c->body->nvec, c->body_u);
+ }
+ }
+ vector_append(c->body, xstrdup(line));
+ return 1; /* completed */
+}
+
static void command_error(const char *msg, void *u) {
struct conn *c = u;
sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
}
-/* process a command. Return 1 if complete, 0 if incomplete. */
+/** @brief @ref line_reader_type callback for commands
+ * @param c Connection
+ * @param line Line
+ * @return 1 if complete, 0 if incomplete
+ *
+ * Called from reader_callback().
+ */
static int command(struct conn *c, char *line) {
char **vec;
int nvec, n;
while((eol = memchr(ptr, '\n', bytes))) {
*eol++ = 0;
ev_reader_consume(reader, eol - (char *)ptr);
- complete = command(c, ptr);
+ complete = c->line_reader(c, ptr); /* usually command() */
bytes -= (eol - (char *)ptr);
ptr = eol;
if(!complete) {
c->ev = ev;
c->w = ev_writer_new(ev, fd, writer_error, c,
"client writer");
+ if(!c->w) {
+ error(0, "ev_writer_new for file inbound connection (fd=%d) failed",
+ fd);
+ close(fd);
+ return 0;
+ }
c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c,
"client reader");
+ if(!c->r)
+ /* Main reason for failure is the FD is too big and that will already have
+ * been handled */
+ fatal(0, "ev_reader_new for file inbound connection (fd=%d) failed", fd);
ev_tie(c->r, c->w);
c->fd = fd;
c->reader = reader_callback;
c->l = l;
c->rights = 0;
+ c->line_reader = command;
connections = c;
gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n",
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