mdw@git.distorted.org.uk Git - disorder/blob - scripts/protocol

   1 #! /usr/bin/perl -w
   2 #
   3 # This file is part of DisOrder.
   4 # Copyright (C) 2010-11 Richard Kettlewell
   5 #
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19 use strict;
  20
  21 # This file contains the definition of the disorder protocol, plus
  22 # code to generates stubs for it in the various supported languages.
  23 #
  24 # At the time of writing it is a work in progress!
  25
  26 #
  27 # Types:
  28 #
  29 #    string         A (Unicode) string.
  30 #    string-raw     A string that is not subject to de-quoting (return only)
  31 #    integer        An integer.  Decimal on the wire.
  32 #    time           A timestamp.  Decimal on the wire.
  33 #    boolean        True or false.  "yes" or "no" on the wire.
  34 #    list           In commands: a list of strings in the command.
  35 #                   In returns: a list of lines in the response.
  36 #    pair-list      In returns: a list of key-value pairs in a response body.
  37 #    body           In commands: a list of strings as a command body.
  38 #                   In returns: a list of strings as a response body.
  39 #    queue          In returns: a list of queue entries in a response body.
  40 #    queue-one      In returns: a queue entry in the response.
  41 #    literal        Constant string sent in sequence
  42 #
  43
  44 # Variables and utilities -----------------------------------------------------
  45
  46 our @h = ();
  47 our @c = ();
  48 our @ah = ();
  49 our @ac = ();
  50 our @missing = ();
  51
  52 # Mapping of return type sequences to eclient callbacks
  53 our @eclient_return = (
  54     ["no_response" => []],
  55     ["string_response" => ["string"]],
  56     ["string_response" => ["string-raw"]],
  57     ["integer_response" => ["integer"]],
  58     ["integer_response" => ["boolean"]],
  59     ["time_response" => ["time"]],
  60     ["pair_integer_response" => ["integer", "integer"]],
  61     ["queue_response" => ["queue"]],
  62     ["playing_response" => ["queue-one"]],
  63     ["list_response" => ["body"]],
  64     );
  65
  66 # eclient_response_matces(RETURNS, VARIANT)
  67 #
  68 # Return true if VARIANT matches RETURNS
  69 sub eclient_response_matches {
  70     my $returns = shift;
  71     my $variant = shift;
  72     my $types = $variant->[1];
  73     if(scalar @$returns != scalar @$types) { return 0; }
  74     for my $n (0 .. $#$returns) {
  75         my $return = $returns->[$n];
  76         my $type = $return->[0];
  77         if($type ne $types->[$n]) { return 0; }
  78     }
  79     return 1;
  80 }
  81
  82 # find_eclient_type(RETURNS)
  83 #
  84 # Find the result type for an eclient call
  85 sub find_eclient_response {
  86     my $returns = shift;
  87     if(!defined $returns) {
  88         $returns = [];
  89     }
  90     for my $variant (@eclient_return) {
  91         if(eclient_response_matches($returns, $variant)) {
  92             return $variant->[0];
  93         }
  94     }
  95     return undef;
  96 }
  97
  98 # Write(PATH, LINES)
  99 #
 100 # Write array ref LINES to file PATH.
 101 sub Write {
 102     my $path = shift;
 103     my $lines = shift;
 104
 105     (open(F, ">$path")
 106      and print F @$lines
 107      and close F)
 108         or die "$0: $path: $!\n";
 109 }
 110
 111 # Command classes -------------------------------------------------------------
 112
 113 # c_in_decl([TYPE, NAME])
 114 #
 115 # Return the C declaration for an input parameter of type TYPE with
 116 # name NAME.
 117 sub c_in_decl {
 118     my $arg = shift;
 119
 120     my $type = $arg->[0];
 121     my $name = $arg->[1];
 122     if($type eq 'string') {
 123         return "const char *$name";
 124     } elsif($type eq 'integer') {
 125         return "long $name";
 126     } elsif($type eq 'time') {
 127         return "time_t $name";
 128     } elsif($type eq 'list' or $type eq 'body') {
 129         return ("char **$name",
 130                 "int n$name");
 131     } elsif($type eq 'literal') {
 132         return ();
 133     } else {
 134         die "$0: c_in_decl: unknown type '$type'\n";
 135     }
 136 }
 137
 138 # c_out_decl([TYPE, NAME])
 139 #
 140 # Return the C declaration for an output (reference) parameter of type
 141 # TYPE with name NAME.
 142 sub c_out_decl {
 143     my $arg = shift;
 144
 145     return () unless defined $arg;
 146     my $type = $arg->[0];
 147     my $name = $arg->[1];
 148     if($type eq 'string' or $type eq 'string-raw') {
 149         return ("char **${name}p");
 150     } elsif($type eq 'integer') {
 151         return ("long *${name}p");
 152     } elsif($type eq 'time') {
 153         return ("time_t *${name}p");
 154     } elsif($type eq 'boolean') {
 155         return ("int *${name}p");
 156     } elsif($type eq 'list' or $type eq 'body') {
 157         return ("char ***${name}p",
 158                 "int *n${name}p");
 159     } elsif($type eq 'pair-list') {
 160         return ("struct kvp **${name}p");
 161     } elsif($type eq 'queue' or $type eq 'queue-one') {
 162         return ("struct queue_entry **${name}p");
 163     } elsif($type eq 'user') {
 164         return ();
 165     } else {
 166         die "$0: c_out_decl: unknown type '$type'\n";
 167     }
 168 }
 169
 170 # c_param_docs([TYPE, NAME})
 171 #
 172 # Return the doc string for a C input parameter.
 173 sub c_param_docs {
 174     my $args = shift;
 175     my @d = ();
 176     for my $arg (@$args) {
 177         my $type = $arg->[0];
 178         my $name = $arg->[1];
 179         my $description = $arg->[2];
 180         if($type eq 'body' or $type eq 'list') {
 181             push(@d,
 182                  " * \@param $name $description\n",
 183                  " * \@param n$name Length of $name\n");
 184         } elsif($type ne 'literal') {
 185             push(@d, " * \@param $name $description\n");
 186         }
 187     }
 188     return @d;
 189 }
 190
 191 # c_param_docs([TYPE, NAME})
 192 #
 193 # Return the doc string for a C output parameter.
 194 sub c_return_docs {
 195     my $returns = shift;
 196     return () unless defined $returns;
 197     for my $return (@$returns) {
 198         my $type = $return->[0];
 199         my $name = $return->[1];
 200         my $descr = $return->[2];
 201         if($type eq 'string'
 202            or $type eq 'string-raw'
 203            or $type eq 'integer'
 204            or $type eq 'time'
 205            or $type eq 'boolean') {
 206             return (" * \@param ${name}p $descr\n");
 207         } elsif($type eq 'list' or $type eq 'body') {
 208             return (" * \@param ${name}p $descr\n",
 209                     " * \@param n${name}p Number of elements in ${name}p\n");
 210         } elsif($type eq 'pair-list') {
 211             return (" * \@param ${name}p $descr\n");
 212         } elsif($type eq 'queue' or $type eq 'queue-one') {
 213             return (" * \@param ${name}p $descr\n");
 214         } elsif($type eq 'user') {
 215             return ();
 216         } else {
 217             die "$0: c_return_docs: unknown type '$type'\n";
 218         }
 219     }
 220 }
 221
 222 # simple(CMD, SUMMARY, DETAIL,
 223 #        [[TYPE,NAME,DESCR], [TYPE,NAME,DESCR], ...],
 224 #        [[RETURN-TYPE, RETURN-NAME, RETURN_DESCR]])
 225 #
 226 # CMD is normally just the name of the command, but can
 227 # be [COMMAND,FUNCTION] if the function name should differ
 228 # from the protocol command.
 229 sub simple {
 230     my $cmd = shift;
 231     my $summary = shift;
 232     my $detail = shift;
 233     my $args = shift;
 234     my $returns = shift;
 235
 236     my $cmdc;
 237     if(ref $cmd eq 'ARRAY') {
 238         $cmdc = $$cmd[1];
 239         $cmd = $$cmd[0];
 240     } else {
 241         $cmdc = $cmd;
 242         $cmdc =~ s/-/_/g;
 243     }
 244     print STDERR "Processing $cmd... ";
 245     # C argument types and conversions
 246     my @cargs = ();
 247     my @conversions = ();
 248     for my $arg (@$args) {
 249         if($arg->[0] eq 'body' or $arg->[0] eq 'list') {
 250             push(@cargs, "disorder__$arg->[0]", $arg->[1], "n$arg->[1]");
 251         } elsif($arg->[0] eq 'string') {
 252             push(@cargs, $arg->[1]);
 253         } elsif($arg->[0] eq 'integer') {
 254             push(@cargs, "buf_$arg->[1]");
 255             push(@conversions,
 256                  "  char buf_$arg->[1]\[16];\n",
 257                  "  byte_snprintf(buf_$arg->[1], sizeof buf_$arg->[1], \"%ld\", $arg->[1]);\n");
 258         } elsif($arg->[0] eq 'time') {
 259             push(@cargs, "buf_$arg->[1]");
 260             push(@conversions,
 261                  "  char buf_$arg->[1]\[16];\n",
 262                  "  byte_snprintf(buf_$arg->[1], sizeof buf_$arg->[1], \"%lld\", (long long)$arg->[1]);\n");
 263         } elsif($arg->[0] eq 'literal') {
 264             push(@cargs, "\"$arg->[1]\"");
 265         } else {
 266             die "$0: unsupported arg type '$arg->[0]' for '$cmd'\n";
 267         }
 268     }
 269     # Synchronous C API
 270     print STDERR "H ";
 271     push(@h, "/** \@brief $summary\n",
 272          " *\n",
 273          " * $detail\n",
 274          " *\n",
 275          " * \@param c Client\n",
 276          c_param_docs($args),
 277          c_return_docs($returns),
 278          " * \@return 0 on success, non-0 on error\n",
 279          " */\n",
 280          "int disorder_$cmdc(",
 281          join(", ", "disorder_client *c",
 282                     map(c_in_decl($_), @$args),
 283                     map(c_out_decl($_), @$returns)),
 284          ");\n\n");
 285     print STDERR "C ";
 286     push(@c, "int disorder_$cmdc(",
 287          join(", ", "disorder_client *c",
 288                     map(c_in_decl($_), @$args),
 289                     map(c_out_decl($_), @$returns)),
 290          ") {\n",
 291         @conversions);
 292     if(!defined $returns or scalar @$returns == 0) {
 293         # Simple case
 294         push(@c, "  return disorder_simple(",
 295              join(", ", "c", "NULL", "\"$cmd\"", @cargs, "(char *)NULL"),
 296              ");\n");
 297     } elsif(scalar @$returns == 1
 298             and $returns->[0]->[0] eq 'queue-one') {
 299         # Special case
 300         my $return = $$returns[0];
 301         push(@c, "  return onequeue(c, \"$cmd\", $return->[1]p);\n");
 302     } elsif(scalar @$returns == 1
 303             and $returns->[0]->[0] eq 'string-raw') {
 304         # Special case
 305         my $return = $$returns[0];
 306         push(@c, "  return disorder_simple(",
 307              join(", ", "c", "$return->[1]p", "\"$cmd\"", @cargs, "(char *)NULL"),
 308              ");\n");
 309     } elsif(scalar @$returns == 1
 310             and $returns->[0]->[0] eq 'pair-list') {
 311         # Special case
 312         my $return = $$returns[0];
 313         push(@c, "  return pairlist(",
 314              join(", ", "c", "$return->[1]p", "\"$cmd\"",
 315                   @cargs,
 316                   "(char *)NULL"),
 317              ");\n");
 318     } else {
 319         my $expected = 0;
 320         for(my $n = 0; $n < scalar @$returns; ++$n) {
 321             my $return = $returns->[$n];
 322             my $type = $return->[0];
 323             my $name = $return->[1];
 324             if($type eq 'string'
 325                or $type eq 'boolean'
 326                or $type eq 'integer'
 327                or $type eq 'time'
 328                or $type eq 'user') {
 329                 ++$expected;
 330             }
 331         }
 332         if($expected) {
 333             push(@c, "  char **v;\n",
 334                  "  int nv, rc = disorder_simple_split(",
 335                  join(", ",
 336                       "c",
 337                       "&v",
 338                       "&nv",
 339                       $expected,
 340                       "\"$cmd\"",
 341                       @cargs,
 342                       "(char *)NULL"),
 343                  ");\n",
 344                  "  if(rc)\n",
 345                  "    return rc;\n");
 346         } else {
 347             push(@c,
 348                  "  int rc = disorder_simple(",
 349                  join(", ",
 350                       "c",
 351                       "NULL",
 352                       "\"$cmd\"",
 353                       @cargs,
 354                       "(char *)NULL"),
 355                  ");\n",
 356                  "  if(rc)\n",
 357                  "    return rc;\n");
 358         }
 359         for(my $n = 0; $n < scalar @$returns; ++$n) {
 360             my $return = $returns->[$n];
 361             my $type = $return->[0];
 362             my $name = $return->[1];
 363             if($type eq 'string') {
 364                 push(@c,
 365                      "  *${name}p = v[$n];\n",
 366                      "  v[$n] = NULL;\n");
 367             } elsif($type eq 'boolean') {
 368                 push(@c,
 369                      "  if(boolean(\"$cmd\", v[$n], ${name}p))\n",
 370                      "    return -1;\n");
 371             } elsif($type eq 'integer') {
 372                 push(@c,
 373                      "  *${name}p = atol(v[$n]);\n");
 374             } elsif($type eq 'time') {
 375                 push(@c,
 376                      "  *${name}p = atoll(v[$n]);\n");
 377             } elsif($type eq 'user') {
 378                 push(@c,
 379                      "  c->user = v[$n];\n",
 380                      "  v[$n] = NULL;\n");
 381             } elsif($type eq 'body') {
 382                 push(@c,
 383                      "  if(readlist(c, ${name}p, n${name}p))\n",
 384                      "    return -1;\n");
 385             } elsif($type eq 'queue') {
 386                 push(@c,
 387                      "  if(readqueue(c, ${name}p))\n",
 388                      "    return -1;\n");
 389             } else {
 390                 die "$0: C API: unknown return type '$type' for '$name'\n";
 391             }
 392         }
 393         if($expected) {
 394             push(@c,
 395                  "  free_strings(nv, v);\n");
 396         }
 397         push(@c, "  return 0;\n");
 398     }
 399     push(@c, "}\n\n");
 400
 401     # Asynchronous C API
 402     my $variant = find_eclient_response($returns);
 403     if(defined $variant) {
 404         print STDERR "AH ";
 405         push(@ah,
 406              "/** \@brief $summary\n",
 407              " *\n",
 408              " * $detail\n",
 409              " *\n",
 410              " * \@param c Client\n",
 411              " * \@param completed Called upon completion\n",
 412              c_param_docs($args),
 413              " * \@param v Passed to \@p completed\n",
 414              " * \@return 0 if the command was queued successfuly, non-0 on error\n",
 415              " */\n",
 416              "int disorder_eclient_$cmdc(",
 417              join(", ", "disorder_eclient *c",
 418                   "disorder_eclient_$variant *completed",
 419                   map(c_in_decl($_), @$args),
 420                   "void *v"),
 421              ");\n\n");
 422
 423         print STDERR "AC ";
 424         push(@ac,
 425              "int disorder_eclient_$cmdc(",
 426              join(", ", "disorder_eclient *c",
 427                   "disorder_eclient_$variant *completed",
 428                   map(c_in_decl($_), @$args),
 429                   "void *v"),
 430              ") {\n",
 431              @conversions);
 432         push(@ac, "  return simple(",
 433              join(", ",
 434                   "c",
 435                   "${variant}_opcallback",
 436                   "(void (*)())completed",
 437                   "v",
 438                   "\"$cmd\"",
 439                   @cargs,
 440                   "(char *)0"),
 441              ");\n");
 442         push(@ac, "}\n\n");
 443     } else {
 444         push(@missing, "disorder_eclient_$cmdc");
 445     }
 446
 447     # Python API
 448     # TODO
 449
 450     # Java API
 451     # TODO
 452     print STDERR "\n";
 453 }
 454
 455 # TODO other command classes
 456
 457 # Front matter ----------------------------------------------------------------
 458
 459 our @generated = ("/*\n",
 460                   " * Automatically generated file, see scripts/protocol\n",
 461                   " *\n",
 462                   " * DO NOT EDIT.\n",
 463                   " */\n");
 464
 465 our @gpl = ("/*\n",
 466             " * This file is part of DisOrder.\n",
 467             " * Copyright (C) 2010-11 Richard Kettlewell\n",
 468             " *\n",
 469             " * This program is free software: you can redistribute it and/or modify\n",
 470             " * it under the terms of the GNU General Public License as published by\n",
 471             " * the Free Software Foundation, either version 3 of the License, or\n",
 472             " * (at your option) any later version.\n",
 473             " *\n",
 474             " * This program is distributed in the hope that it will be useful,\n",
 475             " * but WITHOUT ANY WARRANTY; without even the implied warranty of\n",
 476             " * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n",
 477             " * GNU General Public License for more details.\n",
 478             " *\n",
 479             " * You should have received a copy of the GNU General Public License\n",
 480             " * along with this program.  If not, see <http://www.gnu.org/licenses/>.\n",
 481             " */\n");
 482
 483
 484 push(@h, @generated, @gpl,
 485      "#ifndef CLIENT_STUBS_H\n",
 486      "#define CLIENT_STUBS_H\n",
 487      "\n");
 488
 489 push(@c, @generated, @gpl,
 490      "\n");
 491
 492 push(@ah, @generated, @gpl,
 493      "#ifndef ECLIENT_STUBS_H\n",
 494      "#define ECLIENT_STUBS_H\n",
 495      "\n");
 496
 497 push(@ac, @generated, @gpl,
 498      "\n");
 499
 500 # The protocol ----------------------------------------------------------------
 501
 502 simple("adopt",
 503        "Adopt a track",
 504        "Makes the calling user owner of a randomly picked track.",
 505        [["string", "id", "Track ID"]]);
 506
 507 simple("adduser",
 508        "Create a user",
 509        "Create a new user.  Requires the 'admin' right.  Email addresses etc must be filled in in separate commands.",
 510        [["string", "user", "New username"],
 511         ["string", "password", "Initial password"],
 512         ["string", "rights", "Initial rights (optional)"]]);
 513
 514 simple("allfiles",
 515        "List files and directories in a directory",
 516        "See 'files' and 'dirs' for more specific lists.",
 517        [["string", "dir", "Directory to list (optional)"],
 518         ["string", "re", "Regexp that results must match (optional)"]],
 519        [["body", "files", "List of matching files and directories"]]);
 520
 521 simple("confirm",
 522        "Confirm registration",
 523        "The confirmation string must have been created with 'register'.  The username is returned so the caller knows who they are.",
 524        [["string", "confirmation", "Confirmation string"]],
 525        [["user"]]);
 526
 527 simple("cookie",
 528        "Log in with a cookie",
 529        "The cookie must have been created with 'make-cookie'.  The username is returned so the caller knows who they are.",
 530        [["string", "cookie", "Cookie string"]],
 531        [["user"]]);
 532
 533 simple("deluser",
 534        "Delete user",
 535        "Requires the 'admin' right.",
 536        [["string", "user", "User to delete"]]);
 537
 538 simple("dirs",
 539        "List directories in a directory",
 540        "",
 541        [["string", "dir", "Directory to list (optional)"],
 542         ["string", "re", "Regexp that results must match (optional)"]],
 543        [["body", "files", "List of matching directories"]]);
 544
 545 simple("disable",
 546        "Disable play",
 547        "Play will stop at the end of the current track, if one is playing.  Requires the 'global prefs' right.",
 548        []);
 549
 550 simple("edituser",
 551        "Set a user property",
 552        "With the 'admin' right you can do anything.  Otherwise you need the 'userinfo' right and can only set 'email' and 'password'.",
 553        [["string", "username", "User to modify"],
 554         ["string", "property", "Property name"],
 555         ["string", "value", "New property value"]]);
 556
 557 simple("enable",
 558        "Enable play",
 559        "Requires the 'global prefs' right.",
 560        []);
 561
 562 simple("enabled",
 563        "Detect whether play is enabled",
 564        "",
 565        [],
 566        [["boolean", "enabled", "1 if play is enabled and 0 otherwise"]]);
 567
 568 simple("exists",
 569        "Test whether a track exists",
 570        "",
 571        [["string", "track", "Track name"]],
 572        [["boolean", "exists", "1 if the track exists and 0 otherwise"]]);
 573
 574 simple("files",
 575        "List files in a directory",
 576        "",
 577        [["string", "dir", "Directory to list (optional)"],
 578         ["string", "re", "Regexp that results must match (optional)"]],
 579        [["body", "files", "List of matching files"]]);
 580
 581 simple("get",
 582        "Get a track preference",
 583        "If the track does not exist that is an error.  If the track exists but the preference does not then a null value is returned.",
 584        [["string", "track", "Track name"],
 585         ["string", "pref", "Preference name"]],
 586        [["string", "value", "Preference value"]]);
 587
 588 simple("get-global",
 589        "Get a global preference",
 590        "If the preference does exist not then a null value is returned.",
 591        [["string", "pref", "Global preference name"]],
 592        [["string", "value", "Preference value"]]);
 593
 594 simple("length",
 595        "Get a track's length",
 596        "If the track does not exist an error is returned.",
 597        [["string", "track", "Track name"]],
 598        [["integer", "length", "Track length in seconds"]]);
 599
 600 # TODO log
 601
 602 simple("make-cookie",
 603        "Create a login cookie for this user",
 604        "The cookie may be redeemed via the 'cookie' command",
 605        [],
 606        [["string", "cookie", "Newly created cookie"]]);
 607
 608 simple("move",
 609        "Move a track",
 610        "Requires one of the 'move mine', 'move random' or 'move any' rights depending on how the track came to be added to the queue.",
 611        [["string", "track", "Track ID or name"],
 612         ["integer", "delta", "How far to move the track towards the head of the queue"]]);
 613
 614 simple("moveafter",
 615        "Move multiple tracks",
 616        "Requires one of the 'move mine', 'move random' or 'move any' rights depending on how the track came to be added to the queue.",
 617        [["string", "target", "Move after this track, or to head if \"\""],
 618         ["list", "ids", "List of tracks to move by ID"]]);
 619
 620 simple(["new", "new_tracks"],
 621        "List recently added tracks",
 622        "",
 623        [["integer", "max", "Maximum tracks to fetch, or 0 for all available"]],
 624        [["body", "tracks", "Recently added tracks"]]);
 625
 626 simple("nop",
 627        "Do nothing",
 628        "Used as a keepalive.  No authentication required.",
 629        []);
 630
 631 simple("part",
 632        "Get a track name part",
 633        "If the name part cannot be constructed an empty string is returned.",
 634        [["string", "track", "Track name"],
 635         ["string", "context", "Context (\"sort\" or \"display\")"],
 636         ["string", "part", "Name part (\"artist\", \"album\" or \"title\")"]],
 637        [["string", "part", "Value of name part"]]);
 638
 639 simple("pause",
 640        "Pause the currently playing track",
 641        "Requires the 'pause' right.",
 642        []);
 643
 644 simple("play",
 645        "Play a track",
 646        "Requires the 'play' right.",
 647        [["string", "track", "Track to play"]],
 648        [["string-raw", "id", "Queue ID of new track"]]);
 649
 650 simple("playafter",
 651        "Play multiple tracks",
 652        "Requires the 'play' right.",
 653        [["string", "target", "Insert into queue after this track, or at head if \"\""],
 654         ["list", "tracks", "List of track names to play"]]);
 655
 656 simple("playing",
 657        "Retrieve the playing track",
 658        "",
 659        [],
 660        [["queue-one", "playing", "Details of the playing track"]]);
 661
 662 simple("playlist-delete",
 663        "Delete a playlist",
 664        "Requires the 'play' right and permission to modify the playlist.",
 665        [["string", "playlist", "Playlist to delete"]]);
 666
 667 simple("playlist-get",
 668        "List the contents of a playlist",
 669        "Requires the 'read' right and oermission to read the playlist.",
 670        [["string", "playlist", "Playlist name"]],
 671        [["body", "tracks", "List of tracks in playlist"]]);
 672
 673 simple("playlist-get-share",
 674        "Get a playlist's sharing status",
 675        "Requires the 'read' right and permission to read the playlist.",
 676        [["string", "playlist", "Playlist to read"]],
 677        [["string-raw", "share", "Sharing status (\"public\", \"private\" or \"shared\")"]]);
 678
 679 simple("playlist-lock",
 680        "Lock a playlist",
 681        "Requires the 'play' right and permission to modify the playlist.  A given connection may lock at most one playlist.",
 682        [["string", "playlist", "Playlist to delete"]]);
 683
 684 simple("playlist-set",
 685        "Set the contents of a playlist",
 686        "Requires the 'play' right and permission to modify the playlist, which must be locked.",
 687        [["string", "playlist", "Playlist to modify"],
 688         ["body", "tracks", "New list of tracks for playlist"]]);
 689
 690 simple("playlist-set-share",
 691        "Set a playlist's sharing status",
 692        "Requires the 'play' right and permission to modify the playlist.",
 693        [["string", "playlist", "Playlist to modify"],
 694         ["string", "share", "New sharing status (\"public\", \"private\" or \"shared\")"]]);
 695
 696 simple("playlist-unlock",
 697        "Unlock the locked playlist playlist",
 698        "The playlist to unlock is implicit in the connection.",
 699        []);
 700
 701 simple("playlists",
 702        "List playlists",
 703        "Requires the 'read' right.  Only playlists that you have permission to read are returned.",
 704        [],
 705        [["body", "playlists", "Playlist names"]]);
 706
 707 simple("prefs",
 708        "Get all the preferences for a track",
 709        "",
 710        [["string", "track", "Track name"]],
 711        [["pair-list", "prefs", "Track preferences"]]);
 712
 713 simple("queue",
 714        "List the queue",
 715        "",
 716        [],
 717        [["queue", "queue", "Current queue contents"]]);
 718
 719 simple("random-disable",
 720        "Disable random play",
 721        "Requires the 'global prefs' right.",
 722        []);
 723
 724 simple("random-enable",
 725        "Enable random play",
 726        "Requires the 'global prefs' right.",
 727        []);
 728
 729 simple("random-enabled",
 730        "Detect whether random play is enabled",
 731        "Random play counts as enabled even if play is disabled.",
 732        [],
 733        [["boolean", "enabled", "1 if random play is enabled and 0 otherwise"]]);
 734
 735 simple("recent",
 736        "List recently played tracks",
 737        "",
 738        [],
 739        [["queue", "recent", "Recently played tracks"]]);
 740
 741 simple("reconfigure",
 742        "Re-read configuraiton file.",
 743        "Requires the 'admin' right.",
 744        []);
 745
 746 simple("register",
 747        "Register a new user",
 748        "Requires the 'register' right which is usually only available to the 'guest' user.  Redeem the confirmation string via 'confirm' to complete registration.",
 749        [["string", "username", "Requested new username"],
 750         ["string", "password", "Requested initial password"],
 751         ["string", "email", "New user's email address"]],
 752        [["string", "confirmation", "Confirmation string"]]);
 753
 754 simple("reminder",
 755        "Send a password reminder.",
 756        "If the user has no valid email address, or no password, or a reminder has been sent too recently, then no reminder will be sent.",
 757        [["string", "username", "User to remind"]]);
 758
 759 simple("remove",
 760        "Remove a track form the queue.",
 761        "Requires one of the 'remove mine', 'remove random' or 'remove any' rights depending on how the track came to be added to the queue.",
 762        [["string", "id", "Track ID"]]);
 763
 764 simple("rescan",
 765        "Rescan all collections for new or obsolete tracks.",
 766        "Requires the 'rescan' right.",
 767        []);     # TODO wait/fresh flags
 768
 769 simple("resolve",
 770        "Resolve a track name",
 771        "Converts aliases to non-alias track names",
 772        [["string", "track", "Track name (might be an alias)"]],
 773        [["string", "resolved", "Resolve track name (definitely not an alias)"]]);
 774
 775 simple("resume",
 776        "Resume the currently playing track",
 777        "Requires the 'pause' right.",
 778        []);
 779
 780 simple("revoke",
 781        "Revoke a cookie.",
 782        "It will not subsequently be possible to log in with the cookie.",
 783        []);
 784
 785 simple("rtp-address",
 786        "Get the server's RTP address information",
 787        "",
 788        [],
 789        [["string", "address", "Where to store hostname or address"],
 790         ["string", "port", "Where to store service name or port number"]]);
 791
 792 simple("scratch",
 793        "Terminate the playing track.",
 794        "Requires one of the 'scratch mine', 'scratch random' or 'scratch any' rights depending on how the track came to be added to the queue.",
 795        [["string", "id", "Track ID (optional)"]]);
 796
 797 simple(["schedule-add", "schedule_add_play"],
 798        "Schedule a track to play in the future",
 799        "",
 800        [["time", "when", "When to play the track"],
 801         ["string", "priority", "Event priority (\"normal\" or \"junk\")"],
 802         ["literal", "play", ""],
 803         ["string", "track", "Track to play"]]);
 804
 805 simple(["schedule-add", "schedule_add_set_global"],
 806        "Schedule a global setting to be changed in the future",
 807        "",
 808        [["time", "when", "When to change the setting"],
 809         ["string", "priority", "Event priority (\"normal\" or \"junk\")"],
 810         ["literal", "set-global", ""],
 811         ["string", "pref", "Global preference to set"],
 812         ["string", "value", "New value of global preference"]]);
 813
 814 simple(["schedule-add", "schedule_add_unset_global"],
 815        "Schedule a global setting to be unset in the future",
 816        "",
 817        [["time", "when", "When to change the setting"],
 818         ["string", "priority", "Event priority (\"normal\" or \"junk\")"],
 819         ["literal", "set-global", ""],
 820         ["string", "pref", "Global preference to set"]]);
 821
 822 simple("schedule-del",
 823        "Delete a scheduled event.",
 824        "Users can always delete their own scheduled events; with the admin right you can delete any event.",
 825        [["string", "event", "ID of event to delete"]]);
 826
 827 simple("schedule-get",
 828        "Get the details of scheduled event",
 829        "",
 830        [["string", "id", "Event ID"]],
 831        [["pair-list", "actiondata", "Details of event"]]);
 832
 833 simple("schedule-list",
 834        "List scheduled events",
 835        "This just lists IDs.  Use 'schedule-get' to retrieve more detail",
 836        [],
 837        [["body", "ids", "List of event IDs"]]);
 838
 839 simple("search",
 840        "Search for tracks",
 841        "Terms are either keywords or tags formatted as 'tag:TAG-NAME'.",
 842        [["string", "terms", "List of search terms"]],
 843        [["body", "tracks", "List of matching tracks"]]);
 844
 845 simple("set",
 846        "Set a track preference",
 847        "Requires the 'prefs' right.",
 848        [["string", "track", "Track name"],
 849         ["string", "pref", "Preference name"],
 850         ["string", "value", "New value"]]);
 851
 852 simple("set-global",
 853        "Set a global preference",
 854        "Requires the 'global prefs' right.",
 855        [["string", "pref", "Preference name"],
 856         ["string", "value", "New value"]]);
 857
 858 simple("shutdown",
 859        "Request server shutdown",
 860        "Requires the 'admin' right.",
 861        []);
 862
 863 simple("stats",
 864        "Get server statistics",
 865        "The details of what the server reports are not really defined.  The returned strings are intended to be printed out one to a line.",
 866        [],
 867        [["body", "stats", "List of server information strings."]]);
 868
 869 simple("tags",
 870        "Get a list of known tags",
 871        "Only tags which apply to at least one track are returned.",
 872        [],
 873        [["body", "tags", "List of tags"]]);
 874
 875 simple("unset",
 876        "Unset a track preference",
 877        "Requires the 'prefs' right.",
 878        [["string", "track", "Track name"],
 879         ["string", "pref", "Preference name"]]);
 880
 881 simple("unset-global",
 882        "Set a global preference",
 883        "Requires the 'global prefs' right.",
 884        [["string", "pref", "Preference name"]]);
 885
 886 # 'user' only used for authentication
 887
 888 simple("userinfo",
 889        "Get a user property.",
 890        "If the user does not exist an error is returned, if the user exists but the property does not then a null value is returned.",
 891        [["string", "username", "User to read"],
 892         ["string", "property", "Property to read"]],
 893        [["string", "value", "Value of property"]]);
 894
 895 simple("users",
 896        "Get a list of users",
 897        "",
 898        [],
 899        [["body", "users", "List of users"]]);
 900
 901 simple("version",
 902        "Get the server version",
 903        "",
 904        [],
 905        [["string", "version", "Server version string"]]);
 906
 907 simple(["volume", "set_volume"],
 908        "Set the volume",
 909        "",
 910        [["integer", "left", "Left channel volume"],
 911         ["integer", "right", "Right channel volume"]]);
 912
 913 simple(["volume", "get_volume"],
 914        "Get the volume",
 915        "",
 916        [],
 917        [["integer", "left", "Left channel volume"],
 918         ["integer", "right", "Right channel volume"]]);
 919
 920 # End matter ------------------------------------------------------------------
 921
 922 push(@h, "#endif\n");
 923
 924 push(@ah, "#endif\n");
 925
 926 # Write it all out ------------------------------------------------------------
 927
 928 Write("lib/client-stubs.h", \@h);
 929 Write("lib/client-stubs.c", \@c);
 930
 931 Write("lib/eclient-stubs.h", \@ah);
 932 Write("lib/eclient-stubs.c", \@ac);
 933
 934 if(scalar @missing) {
 935   print "Missing:\n";
 936   print map("  $_\n", @missing);
 937 }