1 | var assert = require('assert-plus');
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2 | var util = require('util');
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3 |
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4 | var asn1 = require('asn1');
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5 |
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6 | var Control = require('./control');
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7 |
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8 |
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9 |
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10 |
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11 | var BerReader = asn1.BerReader;
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12 | var BerWriter = asn1.BerWriter;
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13 |
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14 |
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15 |
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16 |
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17 | function PagedResultsControl(options) {
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18 | assert.optionalObject(options);
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19 | options = options || {};
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20 | options.type = PagedResultsControl.OID;
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21 | if (options.value) {
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22 | if (Buffer.isBuffer(options.value)) {
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23 | this.parse(options.value);
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24 | } else if (typeof (options.value) === 'object') {
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25 | this._value = options.value;
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26 | } else {
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27 | throw new TypeError('options.value must be a Buffer or Object');
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28 | }
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29 | options.value = null;
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30 | }
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31 | Control.call(this, options);
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32 | }
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33 | util.inherits(PagedResultsControl, Control);
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34 | Object.defineProperties(PagedResultsControl.prototype, {
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35 | value: {
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36 | get: function () { return this._value || {}; },
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37 | configurable: false
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38 | }
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39 | });
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40 |
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41 | PagedResultsControl.prototype.parse = function parse(buffer) {
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42 | assert.ok(buffer);
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43 |
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44 | var ber = new BerReader(buffer);
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45 | if (ber.readSequence()) {
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46 | this._value = {};
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47 | this._value.size = ber.readInt();
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48 | this._value.cookie = ber.readString(asn1.Ber.OctetString, true);
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49 |
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50 | if (!this._value.cookie)
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51 | this._value.cookie = new Buffer(0);
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52 |
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53 | return true;
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54 | }
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55 |
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56 | return false;
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57 | };
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58 |
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59 | PagedResultsControl.prototype._toBer = function (ber) {
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60 | assert.ok(ber);
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61 |
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62 | if (!this._value)
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63 | return;
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64 |
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65 | var writer = new BerWriter();
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66 | writer.startSequence();
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67 | writer.writeInt(this.value.size);
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68 | if (this.value.cookie && this.value.cookie.length > 0) {
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69 | writer.writeBuffer(this.value.cookie, asn1.Ber.OctetString);
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70 | } else {
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71 | writer.writeString('');
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72 | }
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73 | writer.endSequence();
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74 |
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75 | ber.writeBuffer(writer.buffer, 0x04);
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76 | };
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77 |
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78 | PagedResultsControl.prototype._json = function (obj) {
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79 | obj.controlValue = this.value;
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80 | return obj;
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81 | };
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82 |
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83 | PagedResultsControl.OID = '1.2.840.113556.1.4.319';
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84 |
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85 |
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86 |
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87 | module.exports = PagedResultsControl;
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