mtrack /inc/lib/Auth/OpenID/AX.php

Language PHP Lines 1023
MD5 Hash b68edf987cc93f58e24d53e96e84fcbb Estimated Cost $14,064 (why?)
Repository https://bitbucket.org/yoander/mtrack View Raw File View Project SPDX
   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
<?php

/**
 * Implements the OpenID attribute exchange specification, version 1.0
 * as of svn revision 370 from openid.net svn.
 *
 * @package OpenID
 */

/**
 * Require utility classes and functions for the consumer.
 */
require_once "Auth/OpenID/Extension.php";
require_once "Auth/OpenID/Message.php";
require_once "Auth/OpenID/TrustRoot.php";

define('Auth_OpenID_AX_NS_URI',
       'http://openid.net/srv/ax/1.0');

// Use this as the 'count' value for an attribute in a FetchRequest to
// ask for as many values as the OP can provide.
define('Auth_OpenID_AX_UNLIMITED_VALUES', 'unlimited');

// Minimum supported alias length in characters.  Here for
// completeness.
define('Auth_OpenID_AX_MINIMUM_SUPPORTED_ALIAS_LENGTH', 32);

/**
 * AX utility class.
 *
 * @package OpenID
 */
class Auth_OpenID_AX {
    /**
     * @param mixed $thing Any object which may be an
     * Auth_OpenID_AX_Error object.
     *
     * @return bool true if $thing is an Auth_OpenID_AX_Error; false
     * if not.
     */
    function isError($thing)
    {
        return is_a($thing, 'Auth_OpenID_AX_Error');
    }
}

/**
 * Check an alias for invalid characters; raise AXError if any are
 * found.  Return None if the alias is valid.
 */
function Auth_OpenID_AX_checkAlias($alias)
{
  if (strpos($alias, ',') !== false) {
      return new Auth_OpenID_AX_Error(sprintf(
                   "Alias %s must not contain comma", $alias));
  }
  if (strpos($alias, '.') !== false) {
      return new Auth_OpenID_AX_Error(sprintf(
                   "Alias %s must not contain period", $alias));
  }

  return true;
}

/**
 * Results from data that does not meet the attribute exchange 1.0
 * specification
 *
 * @package OpenID
 */
class Auth_OpenID_AX_Error {
    function Auth_OpenID_AX_Error($message=null)
    {
        $this->message = $message;
    }
}

/**
 * Abstract class containing common code for attribute exchange
 * messages.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_Message extends Auth_OpenID_Extension {
    /**
     * ns_alias: The preferred namespace alias for attribute exchange
     * messages
     */
    var $ns_alias = 'ax';

    /**
     * mode: The type of this attribute exchange message. This must be
     * overridden in subclasses.
     */
    var $mode = null;

    var $ns_uri = Auth_OpenID_AX_NS_URI;

    /**
     * Return Auth_OpenID_AX_Error if the mode in the attribute
     * exchange arguments does not match what is expected for this
     * class; true otherwise.
     *
     * @access private
     */
    function _checkMode($ax_args)
    {
        $mode = Auth_OpenID::arrayGet($ax_args, 'mode');
        if ($mode != $this->mode) {
            return new Auth_OpenID_AX_Error(
                            sprintf(
                                    "Expected mode '%s'; got '%s'",
                                    $this->mode, $mode));
        }

        return true;
    }

    /**
     * Return a set of attribute exchange arguments containing the
     * basic information that must be in every attribute exchange
     * message.
     *
     * @access private
     */
    function _newArgs()
    {
        return array('mode' => $this->mode);
    }
}

/**
 * Represents a single attribute in an attribute exchange
 * request. This should be added to an AXRequest object in order to
 * request the attribute.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_AttrInfo {
    /**
     * Construct an attribute information object.  Do not call this
     * directly; call make(...) instead.
     *
     * @param string $type_uri The type URI for this attribute.
     *
     * @param int $count The number of values of this type to request.
     *
     * @param bool $required Whether the attribute will be marked as
     * required in the request.
     *
     * @param string $alias The name that should be given to this
     * attribute in the request.
     */
    function Auth_OpenID_AX_AttrInfo($type_uri, $count, $required,
                                     $alias)
    {
        /**
         * required: Whether the attribute will be marked as required
         * when presented to the subject of the attribute exchange
         * request.
         */
        $this->required = $required;

        /**
         * count: How many values of this type to request from the
         * subject. Defaults to one.
         */
        $this->count = $count;

        /**
         * type_uri: The identifier that determines what the attribute
         * represents and how it is serialized. For example, one type
         * URI representing dates could represent a Unix timestamp in
         * base 10 and another could represent a human-readable
         * string.
         */
        $this->type_uri = $type_uri;

        /**
         * alias: The name that should be given to this attribute in
         * the request. If it is not supplied, a generic name will be
         * assigned. For example, if you want to call a Unix timestamp
         * value 'tstamp', set its alias to that value. If two
         * attributes in the same message request to use the same
         * alias, the request will fail to be generated.
         */
        $this->alias = $alias;
    }

    /**
     * Construct an attribute information object.  For parameter
     * details, see the constructor.
     */
    function make($type_uri, $count=1, $required=false,
                  $alias=null)
    {
        if ($alias !== null) {
            $result = Auth_OpenID_AX_checkAlias($alias);

            if (Auth_OpenID_AX::isError($result)) {
                return $result;
            }
        }

        return new Auth_OpenID_AX_AttrInfo($type_uri, $count, $required,
                                           $alias);
    }

    /**
     * When processing a request for this attribute, the OP should
     * call this method to determine whether all available attribute
     * values were requested.  If self.count == UNLIMITED_VALUES, this
     * returns True.  Otherwise this returns False, in which case
     * self.count is an integer.
    */
    function wantsUnlimitedValues()
    {
        return $this->count === Auth_OpenID_AX_UNLIMITED_VALUES;
    }
}

/**
 * Given a namespace mapping and a string containing a comma-separated
 * list of namespace aliases, return a list of type URIs that
 * correspond to those aliases.
 *
 * @param $namespace_map The mapping from namespace URI to alias
 * @param $alias_list_s The string containing the comma-separated
 * list of aliases. May also be None for convenience.
 *
 * @return $seq The list of namespace URIs that corresponds to the
 * supplied list of aliases. If the string was zero-length or None, an
 * empty list will be returned.
 *
 * return null If an alias is present in the list of aliases but
 * is not present in the namespace map.
 */
function Auth_OpenID_AX_toTypeURIs(&$namespace_map, $alias_list_s)
{
    $uris = array();

    if ($alias_list_s) {
        foreach (explode(',', $alias_list_s) as $alias) {
            $type_uri = $namespace_map->getNamespaceURI($alias);
            if ($type_uri === null) {
                // raise KeyError(
                // 'No type is defined for attribute name %r' % (alias,))
                return new Auth_OpenID_AX_Error(
                  sprintf('No type is defined for attribute name %s',
                          $alias)
                  );
            } else {
                $uris[] = $type_uri;
            }
        }
    }

    return $uris;
}

/**
 * An attribute exchange 'fetch_request' message. This message is sent
 * by a relying party when it wishes to obtain attributes about the
 * subject of an OpenID authentication request.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_FetchRequest extends Auth_OpenID_AX_Message {

    var $mode = 'fetch_request';

    function Auth_OpenID_AX_FetchRequest($update_url=null)
    {
        /**
         * requested_attributes: The attributes that have been
         * requested thus far, indexed by the type URI.
         */
        $this->requested_attributes = array();

        /**
         * update_url: A URL that will accept responses for this
         * attribute exchange request, even in the absence of the user
         * who made this request.
        */
        $this->update_url = $update_url;
    }

    /**
     * Add an attribute to this attribute exchange request.
     *
     * @param attribute: The attribute that is being requested
     * @return true on success, false when the requested attribute is
     * already present in this fetch request.
     */
    function add($attribute)
    {
        if ($this->contains($attribute->type_uri)) {
            return new Auth_OpenID_AX_Error(
              sprintf("The attribute %s has already been requested",
                      $attribute->type_uri));
        }

        $this->requested_attributes[$attribute->type_uri] = $attribute;

        return true;
    }

    /**
     * Get the serialized form of this attribute fetch request.
     *
     * @returns Auth_OpenID_AX_FetchRequest The fetch request message parameters
     */
    function getExtensionArgs()
    {
        $aliases = new Auth_OpenID_NamespaceMap();

        $required = array();
        $if_available = array();

        $ax_args = $this->_newArgs();

        foreach ($this->requested_attributes as $type_uri => $attribute) {
            if ($attribute->alias === null) {
                $alias = $aliases->add($type_uri);
            } else {
                $alias = $aliases->addAlias($type_uri, $attribute->alias);

                if ($alias === null) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("Could not add alias %s for URI %s",
                              $attribute->alias, $type_uri
                      ));
                }
            }

            if ($attribute->required) {
                $required[] = $alias;
            } else {
                $if_available[] = $alias;
            }

            if ($attribute->count != 1) {
                $ax_args['count.' . $alias] = strval($attribute->count);
            }

            $ax_args['type.' . $alias] = $type_uri;
        }

        if ($required) {
            $ax_args['required'] = implode(',', $required);
        }

        if ($if_available) {
            $ax_args['if_available'] = implode(',', $if_available);
        }

        return $ax_args;
    }

    /**
     * Get the type URIs for all attributes that have been marked as
     * required.
     *
     * @return A list of the type URIs for attributes that have been
     * marked as required.
     */
    function getRequiredAttrs()
    {
        $required = array();
        foreach ($this->requested_attributes as $type_uri => $attribute) {
            if ($attribute->required) {
                $required[] = $type_uri;
            }
        }

        return $required;
    }

    /**
     * Extract a FetchRequest from an OpenID message
     *
     * @param request: The OpenID request containing the attribute
     * fetch request
     *
     * @returns mixed An Auth_OpenID_AX_Error or the
     * Auth_OpenID_AX_FetchRequest extracted from the request message if
     * successful
     */
    function &fromOpenIDRequest($request)
    {
        $m = $request->message;
        $obj = new Auth_OpenID_AX_FetchRequest();
        $ax_args = $m->getArgs($obj->ns_uri);

        $result = $obj->parseExtensionArgs($ax_args);

        if (Auth_OpenID_AX::isError($result)) {
            return $result;
        }

        if ($obj->update_url) {
            // Update URL must match the openid.realm of the
            // underlying OpenID 2 message.
            $realm = $m->getArg(Auth_OpenID_OPENID_NS, 'realm',
                        $m->getArg(
                                  Auth_OpenID_OPENID_NS,
                                  'return_to'));

            if (!$realm) {
                $obj = new Auth_OpenID_AX_Error(
                  sprintf("Cannot validate update_url %s " .
                          "against absent realm", $obj->update_url));
            } else if (!Auth_OpenID_TrustRoot::match($realm,
                                                     $obj->update_url)) {
                $obj = new Auth_OpenID_AX_Error(
                  sprintf("Update URL %s failed validation against realm %s",
                          $obj->update_url, $realm));
            }
        }

        return $obj;
    }

    /**
     * Given attribute exchange arguments, populate this FetchRequest.
     *
     * @return $result Auth_OpenID_AX_Error if the data to be parsed
     * does not follow the attribute exchange specification. At least
     * when 'if_available' or 'required' is not specified for a
     * particular attribute type.  Returns true otherwise.
    */
    function parseExtensionArgs($ax_args)
    {
        $result = $this->_checkMode($ax_args);
        if (Auth_OpenID_AX::isError($result)) {
            return $result;
        }

        $aliases = new Auth_OpenID_NamespaceMap();

        foreach ($ax_args as $key => $value) {
            if (strpos($key, 'type.') === 0) {
                $alias = substr($key, 5);
                $type_uri = $value;

                $alias = $aliases->addAlias($type_uri, $alias);

                if ($alias === null) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("Could not add alias %s for URI %s",
                              $alias, $type_uri)
                      );
                }

                $count_s = Auth_OpenID::arrayGet($ax_args, 'count.' . $alias);
                if ($count_s) {
                    $count = Auth_OpenID::intval($count_s);
                    if (($count === false) &&
                        ($count_s === Auth_OpenID_AX_UNLIMITED_VALUES)) {
                        $count = $count_s;
                    }
                } else {
                    $count = 1;
                }

                if ($count === false) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("Integer value expected for %s, got %s",
                              'count.' . $alias, $count_s));
                }

                $attrinfo = Auth_OpenID_AX_AttrInfo::make($type_uri, $count,
                                                          false, $alias);

                if (Auth_OpenID_AX::isError($attrinfo)) {
                    return $attrinfo;
                }

                $this->add($attrinfo);
            }
        }

        $required = Auth_OpenID_AX_toTypeURIs($aliases,
                         Auth_OpenID::arrayGet($ax_args, 'required'));

        foreach ($required as $type_uri) {
            $attrib =& $this->requested_attributes[$type_uri];
            $attrib->required = true;
        }

        $if_available = Auth_OpenID_AX_toTypeURIs($aliases,
                             Auth_OpenID::arrayGet($ax_args, 'if_available'));

        $all_type_uris = array_merge($required, $if_available);

        foreach ($aliases->iterNamespaceURIs() as $type_uri) {
            if (!in_array($type_uri, $all_type_uris)) {
                return new Auth_OpenID_AX_Error(
                  sprintf('Type URI %s was in the request but not ' .
                          'present in "required" or "if_available"',
                          $type_uri));

            }
        }

        $this->update_url = Auth_OpenID::arrayGet($ax_args, 'update_url');

        return true;
    }

    /**
     * Iterate over the AttrInfo objects that are contained in this
     * fetch_request.
     */
    function iterAttrs()
    {
        return array_values($this->requested_attributes);
    }

    function iterTypes()
    {
        return array_keys($this->requested_attributes);
    }

    /**
     * Is the given type URI present in this fetch_request?
     */
    function contains($type_uri)
    {
        return in_array($type_uri, $this->iterTypes());
    }
}

/**
 * An abstract class that implements a message that has attribute keys
 * and values. It contains the common code between fetch_response and
 * store_request.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_KeyValueMessage extends Auth_OpenID_AX_Message {

    function Auth_OpenID_AX_KeyValueMessage()
    {
        $this->data = array();
    }

    /**
     * Add a single value for the given attribute type to the
     * message. If there are already values specified for this type,
     * this value will be sent in addition to the values already
     * specified.
     *
     * @param type_uri: The URI for the attribute
     * @param value: The value to add to the response to the relying
     * party for this attribute
     * @return null
     */
    function addValue($type_uri, $value)
    {
        if (!array_key_exists($type_uri, $this->data)) {
            $this->data[$type_uri] = array();
        }

        $values =& $this->data[$type_uri];
        $values[] = $value;
    }

    /**
     * Set the values for the given attribute type. This replaces any
     * values that have already been set for this attribute.
     *
     * @param type_uri: The URI for the attribute
     * @param values: A list of values to send for this attribute.
     */
    function setValues($type_uri, &$values)
    {
        $this->data[$type_uri] =& $values;
    }

    /**
     * Get the extension arguments for the key/value pairs contained
     * in this message.
     *
     * @param aliases: An alias mapping. Set to None if you don't care
     * about the aliases for this request.
     *
     * @access private
     */
    function _getExtensionKVArgs(&$aliases)
    {
        if ($aliases === null) {
            $aliases = new Auth_OpenID_NamespaceMap();
        }

        $ax_args = array();

        foreach ($this->data as $type_uri => $values) {
            $alias = $aliases->add($type_uri);

            $ax_args['type.' . $alias] = $type_uri;
            $ax_args['count.' . $alias] = strval(count($values));

            foreach ($values as $i => $value) {
              $key = sprintf('value.%s.%d', $alias, $i + 1);
              $ax_args[$key] = $value;
            }
        }

        return $ax_args;
    }

    /**
     * Parse attribute exchange key/value arguments into this object.
     *
     * @param ax_args: The attribute exchange fetch_response
     * arguments, with namespacing removed.
     *
     * @return Auth_OpenID_AX_Error or true
     */
    function parseExtensionArgs($ax_args)
    {
        $result = $this->_checkMode($ax_args);
        if (Auth_OpenID_AX::isError($result)) {
            return $result;
        }

        $aliases = new Auth_OpenID_NamespaceMap();

        foreach ($ax_args as $key => $value) {
            if (strpos($key, 'type.') === 0) {
                $type_uri = $value;
                $alias = substr($key, 5);

                $result = Auth_OpenID_AX_checkAlias($alias);

                if (Auth_OpenID_AX::isError($result)) {
                    return $result;
                }

                $alias = $aliases->addAlias($type_uri, $alias);

                if ($alias === null) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("Could not add alias %s for URI %s",
                              $alias, $type_uri)
                      );
                }
            }
        }

        foreach ($aliases->iteritems() as $pair) {
            list($type_uri, $alias) = $pair;

            if (array_key_exists('count.' . $alias, $ax_args)) {

                $count_key = 'count.' . $alias;
                $count_s = $ax_args[$count_key];

                $count = Auth_OpenID::intval($count_s);

                if ($count === false) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("Integer value expected for %s, got %s",
                              'count. %s' . $alias, $count_s,
                              Auth_OpenID_AX_UNLIMITED_VALUES)
                                                    );
                }

                $values = array();
                for ($i = 1; $i < $count + 1; $i++) {
                    $value_key = sprintf('value.%s.%d', $alias, $i);

                    if (!array_key_exists($value_key, $ax_args)) {
                      return new Auth_OpenID_AX_Error(
                        sprintf(
                                "No value found for key %s",
                                $value_key));
                    }

                    $value = $ax_args[$value_key];
                    $values[] = $value;
                }
            } else {
                $key = 'value.' . $alias;

                if (!array_key_exists($key, $ax_args)) {
                  return new Auth_OpenID_AX_Error(
                    sprintf(
                            "No value found for key %s",
                            $key));
                }

                $value = $ax_args['value.' . $alias];

                if ($value == '') {
                    $values = array();
                } else {
                    $values = array($value);
                }
            }

            $this->data[$type_uri] = $values;
        }

        return true;
    }

    /**
     * Get a single value for an attribute. If no value was sent for
     * this attribute, use the supplied default. If there is more than
     * one value for this attribute, this method will fail.
     *
     * @param type_uri: The URI for the attribute
     * @param default: The value to return if the attribute was not
     * sent in the fetch_response.
     *
     * @return $value Auth_OpenID_AX_Error on failure or the value of
     * the attribute in the fetch_response message, or the default
     * supplied
     */
    function getSingle($type_uri, $default=null)
    {
        $values = Auth_OpenID::arrayGet($this->data, $type_uri);
        if (!$values) {
            return $default;
        } else if (count($values) == 1) {
            return $values[0];
        } else {
            return new Auth_OpenID_AX_Error(
              sprintf('More than one value present for %s',
                      $type_uri)
              );
        }
    }

    /**
     * Get the list of values for this attribute in the
     * fetch_response.
     *
     * XXX: what to do if the values are not present? default
     * parameter? this is funny because it's always supposed to return
     * a list, so the default may break that, though it's provided by
     * the user's code, so it might be okay. If no default is
     * supplied, should the return be None or []?
     *
     * @param type_uri: The URI of the attribute
     *
     * @return $values The list of values for this attribute in the
     * response. May be an empty list.  If the attribute was not sent
     * in the response, returns Auth_OpenID_AX_Error.
     */
    function get($type_uri)
    {
        if (array_key_exists($type_uri, $this->data)) {
            return $this->data[$type_uri];
        } else {
            return new Auth_OpenID_AX_Error(
              sprintf("Type URI %s not found in response",
                      $type_uri)
              );
        }
    }

    /**
     * Get the number of responses for a particular attribute in this
     * fetch_response message.
     *
     * @param type_uri: The URI of the attribute
     *
     * @returns int The number of values sent for this attribute.  If
     * the attribute was not sent in the response, returns
     * Auth_OpenID_AX_Error.
     */
    function count($type_uri)
    {
        if (array_key_exists($type_uri, $this->data)) {
            return count($this->get($type_uri));
        } else {
            return new Auth_OpenID_AX_Error(
              sprintf("Type URI %s not found in response",
                      $type_uri)
              );
        }
    }
}

/**
 * A fetch_response attribute exchange message.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_FetchResponse extends Auth_OpenID_AX_KeyValueMessage {
    var $mode = 'fetch_response';

    function Auth_OpenID_AX_FetchResponse($update_url=null)
    {
        $this->Auth_OpenID_AX_KeyValueMessage();
        $this->update_url = $update_url;
    }

    /**
     * Serialize this object into arguments in the attribute exchange
     * namespace
     *
     * @return $args The dictionary of unqualified attribute exchange
     * arguments that represent this fetch_response, or
     * Auth_OpenID_AX_Error on error.
     */
    function getExtensionArgs($request=null)
    {
        $aliases = new Auth_OpenID_NamespaceMap();

        $zero_value_types = array();

        if ($request !== null) {
            // Validate the data in the context of the request (the
            // same attributes should be present in each, and the
            // counts in the response must be no more than the counts
            // in the request)

            foreach ($this->data as $type_uri => $unused) {
                if (!$request->contains($type_uri)) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("Response attribute not present in request: %s",
                              $type_uri)
                      );
                }
            }

            foreach ($request->iterAttrs() as $attr_info) {
                // Copy the aliases from the request so that reading
                // the response in light of the request is easier
                if ($attr_info->alias === null) {
                    $aliases->add($attr_info->type_uri);
                } else {
                    $alias = $aliases->addAlias($attr_info->type_uri,
                                                $attr_info->alias);

                    if ($alias === null) {
                        return new Auth_OpenID_AX_Error(
                          sprintf("Could not add alias %s for URI %s",
                                  $attr_info->alias, $attr_info->type_uri)
                          );
                    }
                }

                if (array_key_exists($attr_info->type_uri, $this->data)) {
                    $values = $this->data[$attr_info->type_uri];
                } else {
                    $values = array();
                    $zero_value_types[] = $attr_info;
                }

                if (($attr_info->count != Auth_OpenID_AX_UNLIMITED_VALUES) &&
                    ($attr_info->count < count($values))) {
                    return new Auth_OpenID_AX_Error(
                      sprintf("More than the number of requested values " .
                              "were specified for %s",
                              $attr_info->type_uri)
                      );
                }
            }
        }

        $kv_args = $this->_getExtensionKVArgs($aliases);

        // Add the KV args into the response with the args that are
        // unique to the fetch_response
        $ax_args = $this->_newArgs();

        // For each requested attribute, put its type/alias and count
        // into the response even if no data were returned.
        foreach ($zero_value_types as $attr_info) {
            $alias = $aliases->getAlias($attr_info->type_uri);
            $kv_args['type.' . $alias] = $attr_info->type_uri;
            $kv_args['count.' . $alias] = '0';
        }

        $update_url = null;
        if ($request) {
            $update_url = $request->update_url;
        } else {
            $update_url = $this->update_url;
        }

        if ($update_url) {
            $ax_args['update_url'] = $update_url;
        }

        Auth_OpenID::update(&$ax_args, $kv_args);

        return $ax_args;
    }

    /**
     * @return $result Auth_OpenID_AX_Error on failure or true on
     * success.
     */
    function parseExtensionArgs($ax_args)
    {
        $result = parent::parseExtensionArgs($ax_args);

        if (Auth_OpenID_AX::isError($result)) {
            return $result;
        }

        $this->update_url = Auth_OpenID::arrayGet($ax_args, 'update_url');

        return true;
    }

    /**
     * Construct a FetchResponse object from an OpenID library
     * SuccessResponse object.
     *
     * @param success_response: A successful id_res response object
     *
     * @param signed: Whether non-signed args should be processsed. If
     * True (the default), only signed arguments will be processsed.
     *
     * @return $response A FetchResponse containing the data from the
     * OpenID message
     */
    function fromSuccessResponse($success_response, $signed=true)
    {
        $obj = new Auth_OpenID_AX_FetchResponse();
        if ($signed) {
            $ax_args = $success_response->getSignedNS($obj->ns_uri);
        } else {
            $ax_args = $success_response->message->getArgs($obj->ns_uri);
        }
        if ($ax_args === null || Auth_OpenID::isFailure($ax_args) ||
              sizeof($ax_args) == 0) {
            return null;
        }

        $result = $obj->parseExtensionArgs($ax_args);
        if (Auth_OpenID_AX::isError($result)) {
            #XXX log me
            return null;
        }
        return $obj;
    }
}

/**
 * A store request attribute exchange message representation.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_StoreRequest extends Auth_OpenID_AX_KeyValueMessage {
    var $mode = 'store_request';

    /**
     * @param array $aliases The namespace aliases to use when making
     * this store response. Leave as None to use defaults.
     */
    function getExtensionArgs($aliases=null)
    {
        $ax_args = $this->_newArgs();
        $kv_args = $this->_getExtensionKVArgs($aliases);
        Auth_OpenID::update(&$ax_args, $kv_args);
        return $ax_args;
    }
}

/**
 * An indication that the store request was processed along with this
 * OpenID transaction.  Use make(), NOT the constructor, to create
 * response objects.
 *
 * @package OpenID
 */
class Auth_OpenID_AX_StoreResponse extends Auth_OpenID_AX_Message {
    var $SUCCESS_MODE = 'store_response_success';
    var $FAILURE_MODE = 'store_response_failure';

    /**
     * Returns Auth_OpenID_AX_Error on error or an
     * Auth_OpenID_AX_StoreResponse object on success.
     */
    function &make($succeeded=true, $error_message=null)
    {
        if (($succeeded) && ($error_message !== null)) {
            return new Auth_OpenID_AX_Error('An error message may only be '.
                                    'included in a failing fetch response');
        }

        return new Auth_OpenID_AX_StoreResponse($succeeded, $error_message);
    }

    function Auth_OpenID_AX_StoreResponse($succeeded=true, $error_message=null)
    {
        if ($succeeded) {
            $this->mode = $this->SUCCESS_MODE;
        } else {
            $this->mode = $this->FAILURE_MODE;
        }

        $this->error_message = $error_message;
    }

    /**
     * Was this response a success response?
     */
    function succeeded()
    {
        return $this->mode == $this->SUCCESS_MODE;
    }

    function getExtensionArgs()
    {
        $ax_args = $this->_newArgs();
        if ((!$this->succeeded()) && $this->error_message) {
            $ax_args['error'] = $this->error_message;
        }

        return $ax_args;
    }
}

?>
Back to Top