/*
* This file is part of DisOrder.
- * Copyright (C) 2004-2008 Richard Kettlewell
+ * Copyright (C) 2004-2009 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"
+#include "basen.h"
#ifndef NONCE_SIZE
# define NONCE_SIZE 16
#endif
#ifndef CONFIRM_SIZE
-# define CONFIRM_SIZE 10
+/** @brief Size of nonce in confirmation string in 32-bit words
+ *
+ * 64 bits gives 11 digits (in base 62).
+ */
+# define CONFIRM_SIZE 2
#endif
int volume_left, volume_right; /* last known volume */
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 */
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
sink_writes(ev_writer_sink(c->w), "510 Prohibited\n");
return 1;
}
- if(mixer_control(-1/*as configured*/, &l, &r, set))
+ if(!api || !api->set_volume) {
sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
- else {
- sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
- if(l != volume_left || r != volume_right) {
- volume_left = l;
- volume_right = r;
- snprintf(lb, sizeof lb, "%d", l);
- snprintf(rb, sizeof rb, "%d", r);
- eventlog("volume", lb, rb, (char *)0);
- }
+ return 1;
+ }
+ (set ? api->set_volume : api->get_volume)(&l, &r);
+ sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
+ if(l != volume_left || r != volume_right) {
+ volume_left = l;
+ volume_right = r;
+ snprintf(lb, sizeof lb, "%d", l);
+ snprintf(rb, sizeof rb, "%d", r);
+ eventlog("volume", lb, rb, (char *)0);
}
return 1;
}
static int c_rtp_address(struct conn *c,
char attribute((unused)) **vec,
int attribute((unused)) nvec) {
- if(config->api == BACKEND_NETWORK) {
+ if(api == &uaudio_rtp) {
+ char **addr;
+
+ netaddress_format(&config->broadcast, NULL, &addr);
sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
- quoteutf8(config->broadcast.s[0]),
- quoteutf8(config->broadcast.s[1]));
+ quoteutf8(addr[1]),
+ quoteutf8(addr[2]));
} else
sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
return 1;
return list_response(c, "User list follows", trackdb_listusers());
}
-/** @brief Base64 mapping table for confirmation strings
- *
- * This is used with generic_to_base64() and generic_base64(). We cannot use
- * the MIME table as that contains '+' and '=' which get quoted when
- * URL-encoding. (The CGI still does the URL encoding but it is desirable to
- * avoid it being necessary.)
- */
-static const char confirm_base64_table[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*";
-
static int c_register(struct conn *c,
char **vec,
int attribute((unused)) nvec) {
- char *buf, *cs;
- size_t bufsize;
- int offset;
-
- /* The confirmation string is base64(username;nonce) */
- bufsize = strlen(vec[0]) + CONFIRM_SIZE + 2;
- buf = xmalloc_noptr(bufsize);
- offset = byte_snprintf(buf, bufsize, "%s;", vec[0]);
- gcry_randomize(buf + offset, CONFIRM_SIZE, GCRY_STRONG_RANDOM);
- cs = generic_to_base64((uint8_t *)buf, offset + CONFIRM_SIZE,
- confirm_base64_table);
+ char *cs;
+ uint32_t nonce[CONFIRM_SIZE];
+ char nonce_str[(32 * CONFIRM_SIZE) / 5 + 1];
+
+ /* The confirmation string is username/base62(nonce). The confirmation
+ * process will pick the username back out to identify them but the _whole_
+ * string is used as the confirmation string. Base 62 means we used only
+ * letters and digits, minimizing the chance of the URL being mispasted. */
+ gcry_randomize(nonce, sizeof nonce, GCRY_STRONG_RANDOM);
+ if(basen(nonce, CONFIRM_SIZE, nonce_str, sizeof nonce_str, 62)) {
+ error(0, "buffer too small encoding confirmation string");
+ sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n");
+ }
+ byte_xasprintf(&cs, "%s/%s", vec[0], nonce_str);
if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs))
sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n");
else
static int c_confirm(struct conn *c,
char **vec,
int attribute((unused)) nvec) {
- size_t nuser;
char *user, *sep;
rights_type rights;
const char *host;
sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n");
return 1;
}
- if(!(user = generic_base64(vec[0], &nuser, confirm_base64_table))
- || !(sep = memchr(user, ';', nuser))) {
+ /* Picking the LAST / means we don't (here) rule out slashes in usernames. */
+ if(!(sep = strrchr(vec[0], '/'))) {
sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n");
return 1;
}
- *sep = 0;
+ user = xstrndup(vec[0], sep - vec[0]);
if(trackdb_confirm(user, vec[0], &rights))
sink_writes(ev_writer_sink(c->w), "550 Incorrect confirmation string\n");
else {
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) {
static int c_playlist_set(struct conn *c,
char **vec,
int attribute((unused)) nvec) {
- /* TODO */
+ 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,
int err;
if(!(err = trackdb_playlist_get(vec[0], c->who, 0, 0, &share))) {
- sink_printf(ev_writer_sink(c->w), "252 %s", quoteutf8(share));
+ sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(share));
return 1;
} else
return playlist_response(c, err);
int err;
if(!(err = trackdb_playlist_set(vec[0], c->who, 0, 0, vec[1]))) {
- sink_printf(ev_writer_sink(c->w), "250 OK");
+ sink_printf(ev_writer_sink(c->w), "250 OK\n");
return 1;
} else
return playlist_response(c, err);
int err;
if(!(err = trackdb_playlist_delete(vec[0], c->who))) {
- sink_writes(ev_writer_sink(c->w), "250 OK");
+ sink_writes(ev_writer_sink(c->w), "250 OK\n");
return 1;
} else
return playlist_response(c, err);
}
static int c_playlist_unlock(struct conn *c,
- char **vec,
+ 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");
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 },
{ "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_PLAY },
- { "playlist-get-share", 1, 1, c_playlist_get_share, 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_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",
l->pf = pf;
if(ev_listen(ev, fd, listen_callback, l, "server listener"))
exit(EXIT_FAILURE);
+ info("listening on %s", name);
return fd;
}
~mdw / disorder / blobdiff