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* song: replaced all song constructorsMax Kellermann2008-10-081-2/+2
| | | | | | Provide separate constructors for creating a remote song, a local song, and one for loading data from a song file. This way, we can add more assertions.
* playlist: simplified setPlaylistRandomStatus()Max Kellermann2008-10-081-16/+15
| | | | | Check the old status before assigning. This saves a temporary variable.
* use the "bool" data type instead of "int"Max Kellermann2008-10-081-13/+13
| | | | "bool" should be used in C99 programs for boolean values.
* song: converted typedef Song to struct songMax Kellermann2008-10-081-10/+13
| | | | Again, a data type which can be forward-declared.
* song: replace printSong* with song_print_*Eric Wong2008-10-071-2/+2
| | | | | | This make argument order more consistent for iterators. Additionally, these now return ssize_t results for error checking.
* song: stop storing song_typeEric Wong2008-10-061-7/+7
| | | | | | | We already know if a song is a URL or not based on whether it has parentDir defined or not. Hopefully one day in the future we can drop HTTP support from MPD entirely when an HTTP filesystem comes along and we can access streams via open(2).
* switch to C99 types, part IIMax Kellermann2008-09-291-4/+4
| | | | | Do full C99 integer type conversion in all modules which were not touched by Eric's merged patch.
* playlist: deleteASongFromPlaylist takes a const Song *Eric Wong2008-09-291-1/+1
| | | | We don't change the song pointer there, either.
* start using prefixcmp()Eric Wong2008-09-231-23/+8
| | | | | LOC reduction and less noise makes things easier for tired old folks to follow.
* playlist: replaced song_id_exists() with song_id_to_position()Max Kellermann2008-09-071-16/+29
| | | | | | | Since all callers of song_id_exists() will map it to a song position after the check, introduce a new function called song_id_to_position() which performs both the check and the map lookup, including nice assertions.
* playlist: don't pass "fd" to showPlaylist(), playlistChangesPosId()Max Kellermann2008-09-071-7/+6
| | | | Pass the client struct instead of the raw file descriptor.
* playlist: added playlist_save()Max Kellermann2008-09-071-2/+11
| | | | | | The shared code in showPlaylist() isn't worth it, because we aim to remove fdprintf(). Duplicate this small function, and enable stdio buffering for saved playlists.
* playlist: pass struct client to loadPlaylist()Max Kellermann2008-09-071-3/+3
| | | | | | | The function loadPlaylist() wants to report incremental errors to the client, for this reason we cannot remove its protocol dependency right now. Instead, make it use the client struct instead of the raw file descriptor.
* pass "struct client" to dbUtils.c, song.c, tag_print.cMax Kellermann2008-09-071-16/+19
| | | | | | Don't pass the raw file descriptor around. This migration patch is rather large, because all of the sources have inter dependencies - we have to change all of them at the same time.
* playlist: PlaylistInfo() does not call commandError()Max Kellermann2008-09-071-4/+1
| | | | | | Continuing the effort of removing protocol specific calls from the core libraries: let the command.c code call commandError() based on PlaylistInfo's return value.
* playlist: don't pass "fd" to storedPlaylist.c functionsMax Kellermann2008-09-071-33/+17
| | | | | Return an "enum playlist_result" value instead of calling commandError() in storedPlaylist.c.
* playlist: don't pass "fd" to playlist.c functionsMax Kellermann2008-09-071-131/+90
| | | | | | The playlist library shouldn't talk to the client if possible. Introduce the "enum playlist_result" type which the caller (i.e. command.c) may use to generate an error message.
* playlist: showPlaylist() and shufflePlaylist() cannot failMax Kellermann2008-09-071-6/+2
| | | | Make them both return void.
* playlist: moved "repeat" and "random" value checks to command.cMax Kellermann2008-09-071-20/+6
| | | | | | | | Client's input values should be validated by the command implementation, and the core libraries shouldn't talk to the client directly if possible. Thus, setPlaylistRepeatStatus() and setPlaylistRandomStatus() don't get the file descriptor, and cannot fail (return void).
* playlist: added is_valid_playlist_name()Max Kellermann2008-09-071-3/+8
| | | | | | | | The function valid_playlist_name() checks the name, but it insists on reporting an eventual error to the client. The new function is_valid_playlist_name() is more generic: it just returns a boolean, and does not care what the caller will use it for. The old function valid_playlist_name() will be removed later.
* song: moved code to song_print.c, song_save.cMax Kellermann2008-09-071-0/+1
| | | | | | | Move everything which dumps song information (via tag_print.c) to a separate source file. song_print.c gets code which writes song data to the client; song_save.c is responsible for serializing songs from the tag cache.
* dbUtils, playlist, directory: pass constant pointersMax Kellermann2008-09-061-7/+7
| | | | The usual bunch of const pointer conversions.
* tag: renamed functions, no CamelCaseMax Kellermann2008-08-291-3/+3
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* renamed player.c to player_control.cMax Kellermann2008-08-261-1/+1
| | | | | Give player.c a better name, meaning that the code is used to control the player thread.
* no commandError() in playerSeek()Max Kellermann2008-08-261-2/+6
| | | | | | We should avoid having protocol specific code in player.c. Just return success or failure, and let the caller send the error code to the MPD client.
* don't initialize "i" if we overwrite it anywayMax Kellermann2008-08-261-1/+3
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* removed the "queue" parameter from syncPlaylistWithQueue()Max Kellermann2008-08-261-12/+11
| | | | | There is only one caller which passes "true", so we can move the queueNextSongInPlaylist() invocation there.
* merge the playlist lock functions into clearPlayerQueue()Max Kellermann2008-08-261-24/+11
| | | | | | There is no unlocked caller of clearPlayerQueue(), and the functions lockPlaylistInteraction() and unlockPlaylistInteraction() are trivial - merge them.
* use switch/case in syncPlaylistWithQueue()Max Kellermann2008-08-261-8/+18
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* don't call playerStop() before playerPlay()Max Kellermann2008-08-261-2/+0
| | | | | | | Since playerPlay() already calls playerStop(), we can remove its invocation of playerStop() from playPlaylistOrderNumber(). We can also make playerStop a static function.
* queueSong() cannot failMax Kellermann2008-08-261-13/+3
| | | | | | | All (indirect) callers of queueSong() ensure that the queue state is BLANK, so there is no need to check it in queueSong() again. As a side effect, queueSong() cannot fail anymore, and can return void. Also, playlist_queueError and all its error handling can go away.
* added enum player_queue_stateMax Kellermann2008-08-261-0/+6
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* playlist: eliminate unused fd parametersMax Kellermann2008-08-261-37/+30
| | | | | Again, remove file descriptor parameters, which are not actually used. These functions can also be converted to return void.
* player: no "fd" and no return valueMax Kellermann2008-08-261-14/+9
| | | | | Most player*() functions do not actually use the file descriptor, and always return 0 (success). Eliminate them to get a leaner interface.
* enable -Wpointer-arith, -Wstrict-prototypesMax Kellermann2008-08-261-1/+1
| | | | | | Also enable -Wunused-parameter - this forces us to add the gcc "unused" attribute to a lot of parameters (mostly library callback functions), but it's worth it during code refactorizations.
* clean up CPP includesMax Kellermann2008-04-121-1/+2
| | | | | | | | | Try to only include headers which are really needed. We should particularly check all "headers including other headers". The long-term goal is to have a manageable, small API for plugins (decoders, output) without so many mpd internals cluttering the namespace. git-svn-id: https://svn.musicpd.org/mpd/trunk@7319 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added clearPlayerQueueLocked()Max Kellermann2008-04-121-43/+24
| | | | | | | since clearPlayerQueue() is always called within lockPlaylistInteraction() / unlockPlaylistInteraction(), it simplifies the code to add another function which calls these three functions. git-svn-id: https://svn.musicpd.org/mpd/trunk@7253 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix strtok() related segmentation faultMax Kellermann2008-03-261-1/+4
| | | | | | strtok() may return NULL if the input is an empty string. The playlist parser did not check for that. git-svn-id: https://svn.musicpd.org/mpd/trunk@7200 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* eliminated duplicate initializationMax Kellermann2008-03-261-2/+2
| | | | | | | Local variables which are never read before the first assignment don't need initialization. Saves a few bytes of text. Also don't reset variables which are never read until function return. git-svn-id: https://svn.musicpd.org/mpd/trunk@7199 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix "unreachable code" warningMax Kellermann2008-03-261-6/+0
| | | | | | There is unreachable code at several positions, e.g. after an #if/#end, or after an endless loop. Remove that. git-svn-id: https://svn.musicpd.org/mpd/trunk@7197 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* check the result of fopen() in all code pathsMax Kellermann2008-03-261-0/+5
| | | | | | | The while() loop only checks for interrupted system calls (which woudl never happen if the signal mask were set up properly), but nobody checks if the fopen() actually succeeds. git-svn-id: https://svn.musicpd.org/mpd/trunk@7195 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Revert the queue implementation and commandsEric Wong2008-01-261-173/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's too ugly and broken (both technically and usability-wise) to be worth supporting in any stable release. In one sentence: The queue is a very crippled version of the playlist that takes precedence over the normal playlist. How is it crippled? * The "queueid" command only allows the queuing of songs ALREADY IN THE PLAYLIST! This promotes having the entire mpd database of songs in the playlist, which is a stupid practice to begin with. * It doesn't allow for meaningful rearranging and movement of songs within the queue. To move a song, you'd need to dequeue and requeue it (and other songs on the list). Why? The playlist already allows _all_ these features and shows everything a client needs to know about the ordering of songs in a _single_ command! * Random was a stupid idea to begin with and unfortunately we're stuck supporting it since we've always had it. Users should learn to use "shuffle" instead and not look at their playlists. Implementing queue because we have the problem of random is just a bandage fix and digging ourselves a new hole. This protocol addition was never in a stable release of mpd, so reverting it will only break things for people following trunk; which I'm not too worried about. I am however worried about long-term support of this misfeature, so I'm removing it. Additionally, there are other points: * It's trivially DoS-able: (while true; do echo queueid $song_id; done) | nc $MPD_HOST $MPD_PORT The above commands would cause the queue to become infinitely expanding, taking up all available memory in the system. The mpd playlist was implemented as an array with a fixed (but configurable) size limit for this reason. * It's not backwards-compatible. All clients would require upgrades (and additional complexity) to even know what the next song in the playlist is. mpd is a shared architecture, and we should not violate the principle of least astonishment here. This removes the following commands: queueid, dequeue, queueinfo Additionally, the status field of "playlistqueue: " is removed from the status command. While this DoS is trivial to fix, the design is simply too broken to ever support in a real release. The overloading of the "addid" command and the allowing of negative numbers to be used as offsets is far more flexible. This improved "addid" is completely backwards-compatible with all clients, and does not require clients to have UI changes or run additional commands to display the queue. git-svn-id: https://svn.musicpd.org/mpd/trunk@7155 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* storedPlaylist: prevent potential DoS from stored playlist commandsEric Wong2008-01-261-1/+1
| | | | | | | | | | | | | | | | | | | | While mpd has always protected against the infinite expansion of the main playlist by limiting its size in memory, however the new storedPlaylist code has never checked for this limit. Malicious (or clumsy) users could repeatedly append songs to stored playlists, causing files to grow increasingly large on disk. Attempting to load extremely large files into memory will require mpd to slurp that all into memory, and ultimately the file would be unusable by mpd because of the configurable playlist size limit. Now we limit stored playlists to the max_playlist_length configuration variable set by the user (default is 16384). We will refuse to append to playlist files if they hit that limit; and also refuse to load more than the specified amount of songs into memory. git-svn-id: https://svn.musicpd.org/mpd/trunk@7154 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* playlist: don't allow no-op/senseless movement of songsEric Wong2008-01-261-8/+14
| | | | | | | | | | This disables moving the bonkered moving of the current song to a (negative) offset of itself (introduced in the last commit). This also short circuits no-op moves when (from == to) and avoid needless increasing of the playlist version and causes clients to issue pointless no-op plchanges commands. git-svn-id: https://svn.musicpd.org/mpd/trunk@7153 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* playlist: allow move to specify offset from current songEric Wong2008-01-261-1/+10
| | | | | | | | | | | | | | | | If (and only if) there is a current song in the playlist, (player could be stopped), allow the move destination argument to be specified as a negative number. This means moving any song (besides the current one) to the -1 position will allow it to be moved to the next song in the playlist. Moving any song to position -2 will move it to the song after the next, and so forth. Moving a song to -playlist.length will move it to the song _before_ the current song on the playlist; so this will work for repeating playlists, too. git-svn-id: https://svn.musicpd.org/mpd/trunk@7152 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* addToPlaylist/addSongToPlaylist: printId argument changed to added_idEric Wong2008-01-261-8/+9
| | | | | | | | | | | | Instead of printing out the Id from playlist.c, instead set the integer that added_id poitns to if added_id is non-NULL. This makes the API cleaner and will allow us to use additional commands to manipulate the newly-added song_id. Callers (handleAddId) that relied on printId to print it to the given fd have now been modified to print the ID at a higher-level; making playlist.c less-dependent on protocol details. git-svn-id: https://svn.musicpd.org/mpd/trunk@7149 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fixed -Wshadow warningsMax Kellermann2008-01-261-9/+10
| | | | | Signed-off-by: Eric Wong <normalperson@yhbt.net> git-svn-id: https://svn.musicpd.org/mpd/trunk@7143 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Cleanup #includes of standard system headers and put them in one placeEric Wong2008-01-031-8/+1
| | | | | | | | | | | | | This will make refactoring features easier, especially now that pthreads support and larger refactorings are on the horizon. Hopefully, this will make porting to other platforms (even non-UNIX-like ones for masochists) easier, too. os_compat.h will house all the #includes for system headers considered to be the "core" of MPD. Headers for optional features will be left to individual source files. git-svn-id: https://svn.musicpd.org/mpd/trunk@7130 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* storedPlaylist: remove the needless StoredPlaylist struct and just use ListEric Wong2008-01-011-8/+8
| | | | | | | | | | | Abstractions should reduce the amount of code and make things easier to follow. The StoredPlaylist struct did not do that, so get rid of it and just use our standard linked list implementation instead. diffstat agrees with me that the abstraction is pointless: 3 files changed, 60 insertions(+), 90 deletions(-) git-svn-id: https://svn.musicpd.org/mpd/trunk@7120 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* storedPlaylist: cleanup API and avoid needless heap allocations + error checksEric Wong2008-01-011-8/+10
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7119 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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